git/http-push.c

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#include "cache.h"
#include "commit.h"
#include "tag.h"
#include "blob.h"
#include "http.h"
#include "refs.h"
#include "diff.h"
#include "revision.h"
#include "exec_cmd.h"
#include "remote.h"
#include "list-objects.h"
#include "sigchain.h"
#ifdef EXPAT_NEEDS_XMLPARSE_H
#include <xmlparse.h>
#else
#include <expat.h>
#endif
static const char http_push_usage[] =
"git http-push [--all] [--dry-run] [--force] [--verbose] <remote> [<head>...]\n";
#ifndef XML_STATUS_OK
enum XML_Status {
XML_STATUS_OK = 1,
XML_STATUS_ERROR = 0
};
#define XML_STATUS_OK 1
#define XML_STATUS_ERROR 0
#endif
#define PREV_BUF_SIZE 4096
/* DAV methods */
#define DAV_LOCK "LOCK"
#define DAV_MKCOL "MKCOL"
#define DAV_MOVE "MOVE"
#define DAV_PROPFIND "PROPFIND"
#define DAV_PUT "PUT"
#define DAV_UNLOCK "UNLOCK"
#define DAV_DELETE "DELETE"
/* DAV lock flags */
#define DAV_PROP_LOCKWR (1u << 0)
#define DAV_PROP_LOCKEX (1u << 1)
#define DAV_LOCK_OK (1u << 2)
/* DAV XML properties */
#define DAV_CTX_LOCKENTRY ".multistatus.response.propstat.prop.supportedlock.lockentry"
#define DAV_CTX_LOCKTYPE_WRITE ".multistatus.response.propstat.prop.supportedlock.lockentry.locktype.write"
#define DAV_CTX_LOCKTYPE_EXCLUSIVE ".multistatus.response.propstat.prop.supportedlock.lockentry.lockscope.exclusive"
#define DAV_ACTIVELOCK_OWNER ".prop.lockdiscovery.activelock.owner.href"
#define DAV_ACTIVELOCK_TIMEOUT ".prop.lockdiscovery.activelock.timeout"
#define DAV_ACTIVELOCK_TOKEN ".prop.lockdiscovery.activelock.locktoken.href"
#define DAV_PROPFIND_RESP ".multistatus.response"
#define DAV_PROPFIND_NAME ".multistatus.response.href"
#define DAV_PROPFIND_COLLECTION ".multistatus.response.propstat.prop.resourcetype.collection"
/* DAV request body templates */
#define PROPFIND_SUPPORTEDLOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:prop xmlns:R=\"%s\">\n<D:supportedlock/>\n</D:prop>\n</D:propfind>"
#define PROPFIND_ALL_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:propfind xmlns:D=\"DAV:\">\n<D:allprop/>\n</D:propfind>"
#define LOCK_REQUEST "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<D:lockinfo xmlns:D=\"DAV:\">\n<D:lockscope><D:exclusive/></D:lockscope>\n<D:locktype><D:write/></D:locktype>\n<D:owner>\n<D:href>mailto:%s</D:href>\n</D:owner>\n</D:lockinfo>"
#define LOCK_TIME 600
#define LOCK_REFRESH 30
/* bits #0-15 in revision.h */
#define LOCAL (1u<<16)
#define REMOTE (1u<<17)
#define FETCHING (1u<<18)
#define PUSHING (1u<<19)
/* We allow "recursive" symbolic refs. Only within reason, though */
#define MAXDEPTH 5
static int pushing;
static int aborted;
static signed char remote_dir_exists[256];
static int push_verbosely;
static int push_all = MATCH_REFS_NONE;
static int force_all;
static int dry_run;
static int helper_status;
static struct object_list *objects;
struct repo {
char *url;
char *path;
int path_len;
int has_info_refs;
int can_update_info_refs;
int has_info_packs;
struct packed_git *packs;
struct remote_lock *locks;
};
static struct repo *repo;
enum transfer_state {
NEED_FETCH,
RUN_FETCH_LOOSE,
RUN_FETCH_PACKED,
NEED_PUSH,
RUN_MKCOL,
RUN_PUT,
RUN_MOVE,
ABORTED,
COMPLETE
};
struct transfer_request {
struct object *obj;
char *url;
char *dest;
struct remote_lock *lock;
struct curl_slist *headers;
struct buffer buffer;
enum transfer_state state;
CURLcode curl_result;
char errorstr[CURL_ERROR_SIZE];
long http_code;
void *userData;
struct active_request_slot *slot;
struct transfer_request *next;
};
static struct transfer_request *request_queue_head;
struct xml_ctx {
char *name;
int len;
char *cdata;
void (*userFunc)(struct xml_ctx *ctx, int tag_closed);
void *userData;
};
struct remote_lock {
char *url;
char *owner;
char *token;
char tmpfile_suffix[41];
time_t start_time;
long timeout;
int refreshing;
struct remote_lock *next;
};
/* Flags that control remote_ls processing */
#define PROCESS_FILES (1u << 0)
#define PROCESS_DIRS (1u << 1)
#define RECURSIVE (1u << 2)
/* Flags that remote_ls passes to callback functions */
#define IS_DIR (1u << 0)
struct remote_ls_ctx {
char *path;
void (*userFunc)(struct remote_ls_ctx *ls);
void *userData;
int flags;
char *dentry_name;
int dentry_flags;
struct remote_ls_ctx *parent;
};
/* get_dav_token_headers options */
enum dav_header_flag {
DAV_HEADER_IF = (1u << 0),
DAV_HEADER_LOCK = (1u << 1),
DAV_HEADER_TIMEOUT = (1u << 2)
};
static char *xml_entities(const char *s)
{
struct strbuf buf = STRBUF_INIT;
strbuf_addstr_xml_quoted(&buf, s);
return strbuf_detach(&buf, NULL);
}
static void curl_setup_http_get(CURL *curl, const char *url,
const char *custom_req)
{
curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_null);
}
static void curl_setup_http(CURL *curl, const char *url,
const char *custom_req, struct buffer *buffer,
curl_write_callback write_fn)
{
curl_easy_setopt(curl, CURLOPT_PUT, 1);
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_INFILE, buffer);
curl_easy_setopt(curl, CURLOPT_INFILESIZE, buffer->buf.len);
curl_easy_setopt(curl, CURLOPT_READFUNCTION, fread_buffer);
#ifndef NO_CURL_IOCTL
curl_easy_setopt(curl, CURLOPT_IOCTLFUNCTION, ioctl_buffer);
curl_easy_setopt(curl, CURLOPT_IOCTLDATA, &buffer);
#endif
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_fn);
curl_easy_setopt(curl, CURLOPT_NOBODY, 0);
curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, custom_req);
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1);
}
static struct curl_slist *get_dav_token_headers(struct remote_lock *lock, enum dav_header_flag options)
{
struct strbuf buf = STRBUF_INIT;
struct curl_slist *dav_headers = NULL;
if (options & DAV_HEADER_IF) {
strbuf_addf(&buf, "If: (<%s>)", lock->token);
dav_headers = curl_slist_append(dav_headers, buf.buf);
strbuf_reset(&buf);
}
if (options & DAV_HEADER_LOCK) {
strbuf_addf(&buf, "Lock-Token: <%s>", lock->token);
dav_headers = curl_slist_append(dav_headers, buf.buf);
strbuf_reset(&buf);
}
if (options & DAV_HEADER_TIMEOUT) {
strbuf_addf(&buf, "Timeout: Second-%ld", lock->timeout);
dav_headers = curl_slist_append(dav_headers, buf.buf);
strbuf_reset(&buf);
}
strbuf_release(&buf);
return dav_headers;
}
static void finish_request(struct transfer_request *request);
static void release_request(struct transfer_request *request);
static void process_response(void *callback_data)
{
struct transfer_request *request =
(struct transfer_request *)callback_data;
finish_request(request);
}
#ifdef USE_CURL_MULTI
static void start_fetch_loose(struct transfer_request *request)
{
struct active_request_slot *slot;
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
struct http_object_request *obj_req;
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
obj_req = new_http_object_request(repo->url, request->obj->sha1);
if (obj_req == NULL) {
request->state = ABORTED;
return;
}
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
slot = obj_req->slot;
slot->callback_func = process_response;
slot->callback_data = request;
request->slot = slot;
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
request->userData = obj_req;
/* Try to get the request started, abort the request on error */
request->state = RUN_FETCH_LOOSE;
if (!start_active_slot(slot)) {
fprintf(stderr, "Unable to start GET request\n");
repo->can_update_info_refs = 0;
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
release_http_object_request(obj_req);
release_request(request);
}
}
static void start_mkcol(struct transfer_request *request)
{
char *hex = sha1_to_hex(request->obj->sha1);
struct active_request_slot *slot;
request->url = get_remote_object_url(repo->url, hex, 1);
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
curl_setup_http_get(slot->curl, request->url, DAV_MKCOL);
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, request->errorstr);
if (start_active_slot(slot)) {
request->slot = slot;
request->state = RUN_MKCOL;
} else {
request->state = ABORTED;
free(request->url);
request->url = NULL;
}
}
#endif
static void start_fetch_packed(struct transfer_request *request)
{
struct packed_git *target;
struct transfer_request *check_request = request_queue_head;
struct http_pack_request *preq;
target = find_sha1_pack(request->obj->sha1, repo->packs);
if (!target) {
fprintf(stderr, "Unable to fetch %s, will not be able to update server info refs\n", sha1_to_hex(request->obj->sha1));
repo->can_update_info_refs = 0;
release_request(request);
return;
}
fprintf(stderr, "Fetching pack %s\n", sha1_to_hex(target->sha1));
fprintf(stderr, " which contains %s\n", sha1_to_hex(request->obj->sha1));
preq = new_http_pack_request(target, repo->url);
if (preq == NULL) {
release_http_pack_request(preq);
repo->can_update_info_refs = 0;
return;
}
preq->lst = &repo->packs;
/* Make sure there isn't another open request for this pack */
while (check_request) {
if (check_request->state == RUN_FETCH_PACKED &&
!strcmp(check_request->url, preq->url)) {
release_http_pack_request(preq);
release_request(request);
return;
}
check_request = check_request->next;
}
preq->slot->callback_func = process_response;
preq->slot->callback_data = request;
request->slot = preq->slot;
request->userData = preq;
/* Try to get the request started, abort the request on error */
request->state = RUN_FETCH_PACKED;
if (!start_active_slot(preq->slot)) {
fprintf(stderr, "Unable to start GET request\n");
release_http_pack_request(preq);
repo->can_update_info_refs = 0;
release_request(request);
}
}
static void start_put(struct transfer_request *request)
{
char *hex = sha1_to_hex(request->obj->sha1);
struct active_request_slot *slot;
struct strbuf buf = STRBUF_INIT;
enum object_type type;
char hdr[50];
void *unpacked;
unsigned long len;
int hdrlen;
ssize_t size;
2011-06-11 02:52:15 +08:00
git_zstream stream;
unpacked = read_sha1_file(request->obj->sha1, &type, &len);
hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
/* Set it up */
memset(&stream, 0, sizeof(stream));
git_deflate_init(&stream, zlib_compression_level);
size = git_deflate_bound(&stream, len + hdrlen);
strbuf_init(&request->buffer.buf, size);
request->buffer.posn = 0;
/* Compress it */
stream.next_out = (unsigned char *)request->buffer.buf.buf;
stream.avail_out = size;
/* First header.. */
stream.next_in = (void *)hdr;
stream.avail_in = hdrlen;
while (git_deflate(&stream, 0) == Z_OK)
; /* nothing */
/* Then the data itself.. */
stream.next_in = unpacked;
stream.avail_in = len;
while (git_deflate(&stream, Z_FINISH) == Z_OK)
; /* nothing */
git_deflate_end(&stream);
free(unpacked);
request->buffer.buf.len = stream.total_out;
strbuf_addstr(&buf, "Destination: ");
append_remote_object_url(&buf, repo->url, hex, 0);
request->dest = strbuf_detach(&buf, NULL);
append_remote_object_url(&buf, repo->url, hex, 0);
strbuf_add(&buf, request->lock->tmpfile_suffix, 41);
request->url = strbuf_detach(&buf, NULL);
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
curl_setup_http(slot->curl, request->url, DAV_PUT,
&request->buffer, fwrite_null);
if (start_active_slot(slot)) {
request->slot = slot;
request->state = RUN_PUT;
} else {
request->state = ABORTED;
free(request->url);
request->url = NULL;
}
}
static void start_move(struct transfer_request *request)
{
struct active_request_slot *slot;
struct curl_slist *dav_headers = NULL;
slot = get_active_slot();
slot->callback_func = process_response;
slot->callback_data = request;
curl_setup_http_get(slot->curl, request->url, DAV_MOVE);
dav_headers = curl_slist_append(dav_headers, request->dest);
dav_headers = curl_slist_append(dav_headers, "Overwrite: T");
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
request->slot = slot;
request->state = RUN_MOVE;
} else {
request->state = ABORTED;
free(request->url);
request->url = NULL;
}
}
static int refresh_lock(struct remote_lock *lock)
{
struct active_request_slot *slot;
struct slot_results results;
struct curl_slist *dav_headers;
int rc = 0;
lock->refreshing = 1;
dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF | DAV_HEADER_TIMEOUT);
slot = get_active_slot();
slot->results = &results;
curl_setup_http_get(slot->curl, lock->url, DAV_LOCK);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
fprintf(stderr, "LOCK HTTP error %ld\n",
results.http_code);
} else {
lock->start_time = time(NULL);
rc = 1;
}
}
lock->refreshing = 0;
curl_slist_free_all(dav_headers);
return rc;
}
static void check_locks(void)
{
struct remote_lock *lock = repo->locks;
time_t current_time = time(NULL);
int time_remaining;
while (lock) {
time_remaining = lock->start_time + lock->timeout -
current_time;
if (!lock->refreshing && time_remaining < LOCK_REFRESH) {
if (!refresh_lock(lock)) {
fprintf(stderr,
"Unable to refresh lock for %s\n",
lock->url);
aborted = 1;
return;
}
}
lock = lock->next;
}
}
static void release_request(struct transfer_request *request)
{
struct transfer_request *entry = request_queue_head;
if (request == request_queue_head) {
request_queue_head = request->next;
} else {
while (entry->next != NULL && entry->next != request)
entry = entry->next;
if (entry->next == request)
entry->next = entry->next->next;
}
Avoid unnecessary "if-before-free" tests. This change removes all obvious useless if-before-free tests. E.g., it replaces code like this: if (some_expression) free (some_expression); with the now-equivalent: free (some_expression); It is equivalent not just because POSIX has required free(NULL) to work for a long time, but simply because it has worked for so long that no reasonable porting target fails the test. Here's some evidence from nearly 1.5 years ago: http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html FYI, the change below was prepared by running the following: git ls-files -z | xargs -0 \ perl -0x3b -pi -e \ 's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s' Note however, that it doesn't handle brace-enclosed blocks like "if (x) { free (x); }". But that's ok, since there were none like that in git sources. Beware: if you do use the above snippet, note that it can produce syntactically invalid C code. That happens when the affected "if"-statement has a matching "else". E.g., it would transform this if (x) free (x); else foo (); into this: free (x); else foo (); There were none of those here, either. If you're interested in automating detection of the useless tests, you might like the useless-if-before-free script in gnulib: [it *does* detect brace-enclosed free statements, and has a --name=S option to make it detect free-like functions with different names] http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free Addendum: Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-01 01:26:32 +08:00
free(request->url);
free(request);
}
static void finish_request(struct transfer_request *request)
{
struct http_pack_request *preq;
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
struct http_object_request *obj_req;
request->curl_result = request->slot->curl_result;
request->http_code = request->slot->http_code;
request->slot = NULL;
/* Keep locks active */
check_locks();
if (request->headers != NULL)
curl_slist_free_all(request->headers);
/* URL is reused for MOVE after PUT */
if (request->state != RUN_PUT) {
free(request->url);
request->url = NULL;
}
if (request->state == RUN_MKCOL) {
if (request->curl_result == CURLE_OK ||
request->http_code == 405) {
remote_dir_exists[request->obj->sha1[0]] = 1;
start_put(request);
} else {
fprintf(stderr, "MKCOL %s failed, aborting (%d/%ld)\n",
sha1_to_hex(request->obj->sha1),
request->curl_result, request->http_code);
request->state = ABORTED;
aborted = 1;
}
} else if (request->state == RUN_PUT) {
if (request->curl_result == CURLE_OK) {
start_move(request);
} else {
fprintf(stderr, "PUT %s failed, aborting (%d/%ld)\n",
sha1_to_hex(request->obj->sha1),
request->curl_result, request->http_code);
request->state = ABORTED;
aborted = 1;
}
} else if (request->state == RUN_MOVE) {
if (request->curl_result == CURLE_OK) {
if (push_verbosely)
fprintf(stderr, " sent %s\n",
sha1_to_hex(request->obj->sha1));
request->obj->flags |= REMOTE;
release_request(request);
} else {
fprintf(stderr, "MOVE %s failed, aborting (%d/%ld)\n",
sha1_to_hex(request->obj->sha1),
request->curl_result, request->http_code);
request->state = ABORTED;
aborted = 1;
}
} else if (request->state == RUN_FETCH_LOOSE) {
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
obj_req = (struct http_object_request *)request->userData;
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
if (finish_http_object_request(obj_req) == 0)
if (obj_req->rename == 0)
request->obj->flags |= (LOCAL | REMOTE);
/* Try fetching packed if necessary */
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
if (request->obj->flags & LOCAL) {
release_http_object_request(obj_req);
release_request(request);
http*: add helper methods for fetching objects (loose) The code handling the fetching of loose objects in http-push.c and http-walker.c have been refactored into new methods and a new struct (object_http_request) in http.c. They are not meant to be invoked elsewhere. The new methods in http.c are - new_http_object_request - process_http_object_request - finish_http_object_request - abort_http_object_request - release_http_object_request and the new struct is http_object_request. RANGER_HEADER_SIZE and no_pragma_header is no longer made available outside of http.c, since after the above changes, there are no other instances of usage outside of http.c. Remove members of the transfer_request struct in http-push.c and http-walker.c, including filename, real_sha1 and zret, as they are used no longer used. Move the methods append_remote_object_url() and get_remote_object_url() from http-push.c to http.c. Additionally, get_remote_object_url() is no longer defined only when USE_CURL_MULTI is defined, since non-USE_CURL_MULTI code in http.c uses it (namely, in new_http_object_request()). Refactor code from http-push.c::start_fetch_loose() and http-walker.c::start_object_fetch_request() that deals with the details of coming up with the filename to store the retrieved object, resuming a previously aborted request, and making a new curl request, into a new function, new_http_object_request(). Refactor code from http-walker.c::process_object_request() into the function, process_http_object_request(). Refactor code from http-push.c::finish_request() and http-walker.c::finish_object_request() into a new function, finish_http_object_request(). It returns the result of the move_temp_to_file() invocation. Add a function, release_http_object_request(), which cleans up object request data. http-push.c and http-walker.c invoke this function separately; http-push.c::release_request() and http-walker.c::release_object_request() do not invoke this function. Add a function, abort_http_object_request(), which unlink()s the object file and invokes release_http_object_request(). Update http-walker.c::abort_object_request() to use this. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-06-06 16:44:02 +08:00
} else
start_fetch_packed(request);
} else if (request->state == RUN_FETCH_PACKED) {
int fail = 1;
if (request->curl_result != CURLE_OK) {
fprintf(stderr, "Unable to get pack file %s\n%s",
request->url, curl_errorstr);
} else {
preq = (struct http_pack_request *)request->userData;
if (preq) {
if (finish_http_pack_request(preq) == 0)
fail = 0;
release_http_pack_request(preq);
}
}
if (fail)
repo->can_update_info_refs = 0;
release_request(request);
}
}
#ifdef USE_CURL_MULTI
static int is_running_queue;
static int fill_active_slot(void *unused)
{
struct transfer_request *request;
if (aborted || !is_running_queue)
return 0;
for (request = request_queue_head; request; request = request->next) {
if (request->state == NEED_FETCH) {
start_fetch_loose(request);
return 1;
} else if (pushing && request->state == NEED_PUSH) {
if (remote_dir_exists[request->obj->sha1[0]] == 1) {
start_put(request);
} else {
start_mkcol(request);
}
return 1;
}
}
return 0;
}
#endif
static void get_remote_object_list(unsigned char parent);
static void add_fetch_request(struct object *obj)
{
struct transfer_request *request;
check_locks();
/*
* Don't fetch the object if it's known to exist locally
* or is already in the request queue
*/
if (remote_dir_exists[obj->sha1[0]] == -1)
get_remote_object_list(obj->sha1[0]);
if (obj->flags & (LOCAL | FETCHING))
return;
obj->flags |= FETCHING;
request = xmalloc(sizeof(*request));
request->obj = obj;
request->url = NULL;
request->lock = NULL;
request->headers = NULL;
request->state = NEED_FETCH;
request->next = request_queue_head;
request_queue_head = request;
#ifdef USE_CURL_MULTI
fill_active_slots();
step_active_slots();
#endif
}
static int add_send_request(struct object *obj, struct remote_lock *lock)
{
struct transfer_request *request;
struct packed_git *target;
/* Keep locks active */
check_locks();
/*
* Don't push the object if it's known to exist on the remote
* or is already in the request queue
*/
if (remote_dir_exists[obj->sha1[0]] == -1)
get_remote_object_list(obj->sha1[0]);
if (obj->flags & (REMOTE | PUSHING))
return 0;
target = find_sha1_pack(obj->sha1, repo->packs);
if (target) {
obj->flags |= REMOTE;
return 0;
}
obj->flags |= PUSHING;
request = xmalloc(sizeof(*request));
request->obj = obj;
request->url = NULL;
request->lock = lock;
request->headers = NULL;
request->state = NEED_PUSH;
request->next = request_queue_head;
request_queue_head = request;
#ifdef USE_CURL_MULTI
fill_active_slots();
step_active_slots();
#endif
return 1;
}
static int fetch_indices(void)
{
int ret;
if (push_verbosely)
fprintf(stderr, "Getting pack list\n");
switch (http_get_info_packs(repo->url, &repo->packs)) {
case HTTP_OK:
case HTTP_MISSING_TARGET:
ret = 0;
break;
default:
ret = -1;
}
return ret;
}
static void one_remote_object(const char *hex)
{
unsigned char sha1[20];
struct object *obj;
if (get_sha1_hex(hex, sha1) != 0)
return;
obj = lookup_object(sha1);
if (!obj)
obj = parse_object(sha1);
/* Ignore remote objects that don't exist locally */
if (!obj)
return;
obj->flags |= REMOTE;
if (!object_list_contains(objects, obj))
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
object_list_insert(obj, &objects);
}
static void handle_lockprop_ctx(struct xml_ctx *ctx, int tag_closed)
{
int *lock_flags = (int *)ctx->userData;
if (tag_closed) {
if (!strcmp(ctx->name, DAV_CTX_LOCKENTRY)) {
if ((*lock_flags & DAV_PROP_LOCKEX) &&
(*lock_flags & DAV_PROP_LOCKWR)) {
*lock_flags |= DAV_LOCK_OK;
}
*lock_flags &= DAV_LOCK_OK;
} else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_WRITE)) {
*lock_flags |= DAV_PROP_LOCKWR;
} else if (!strcmp(ctx->name, DAV_CTX_LOCKTYPE_EXCLUSIVE)) {
*lock_flags |= DAV_PROP_LOCKEX;
}
}
}
static void handle_new_lock_ctx(struct xml_ctx *ctx, int tag_closed)
{
struct remote_lock *lock = (struct remote_lock *)ctx->userData;
git_SHA_CTX sha_ctx;
unsigned char lock_token_sha1[20];
if (tag_closed && ctx->cdata) {
if (!strcmp(ctx->name, DAV_ACTIVELOCK_OWNER)) {
lock->owner = xmalloc(strlen(ctx->cdata) + 1);
strcpy(lock->owner, ctx->cdata);
} else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TIMEOUT)) {
if (!prefixcmp(ctx->cdata, "Second-"))
lock->timeout =
strtol(ctx->cdata + 7, NULL, 10);
} else if (!strcmp(ctx->name, DAV_ACTIVELOCK_TOKEN)) {
lock->token = xmalloc(strlen(ctx->cdata) + 1);
strcpy(lock->token, ctx->cdata);
git_SHA1_Init(&sha_ctx);
git_SHA1_Update(&sha_ctx, lock->token, strlen(lock->token));
git_SHA1_Final(lock_token_sha1, &sha_ctx);
lock->tmpfile_suffix[0] = '_';
memcpy(lock->tmpfile_suffix + 1, sha1_to_hex(lock_token_sha1), 40);
}
}
}
static void one_remote_ref(const char *refname);
static void
xml_start_tag(void *userData, const char *name, const char **atts)
{
struct xml_ctx *ctx = (struct xml_ctx *)userData;
const char *c = strchr(name, ':');
int new_len;
if (c == NULL)
c = name;
else
c++;
new_len = strlen(ctx->name) + strlen(c) + 2;
if (new_len > ctx->len) {
ctx->name = xrealloc(ctx->name, new_len);
ctx->len = new_len;
}
strcat(ctx->name, ".");
strcat(ctx->name, c);
free(ctx->cdata);
ctx->cdata = NULL;
ctx->userFunc(ctx, 0);
}
static void
xml_end_tag(void *userData, const char *name)
{
struct xml_ctx *ctx = (struct xml_ctx *)userData;
const char *c = strchr(name, ':');
char *ep;
ctx->userFunc(ctx, 1);
if (c == NULL)
c = name;
else
c++;
ep = ctx->name + strlen(ctx->name) - strlen(c) - 1;
*ep = 0;
}
static void
xml_cdata(void *userData, const XML_Char *s, int len)
{
struct xml_ctx *ctx = (struct xml_ctx *)userData;
free(ctx->cdata);
ctx->cdata = xmemdupz(s, len);
}
static struct remote_lock *lock_remote(const char *path, long timeout)
{
struct active_request_slot *slot;
struct slot_results results;
struct buffer out_buffer = { STRBUF_INIT, 0 };
struct strbuf in_buffer = STRBUF_INIT;
char *url;
char *ep;
char timeout_header[25];
struct remote_lock *lock = NULL;
struct curl_slist *dav_headers = NULL;
struct xml_ctx ctx;
char *escaped;
url = xmalloc(strlen(repo->url) + strlen(path) + 1);
sprintf(url, "%s%s", repo->url, path);
/* Make sure leading directories exist for the remote ref */
ep = strchr(url + strlen(repo->url) + 1, '/');
while (ep) {
char saved_character = ep[1];
ep[1] = '\0';
slot = get_active_slot();
slot->results = &results;
curl_setup_http_get(slot->curl, url, DAV_MKCOL);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK &&
results.http_code != 405) {
fprintf(stderr,
"Unable to create branch path %s\n",
url);
free(url);
return NULL;
}
} else {
fprintf(stderr, "Unable to start MKCOL request\n");
free(url);
return NULL;
}
ep[1] = saved_character;
ep = strchr(ep + 1, '/');
}
escaped = xml_entities(ident_default_email());
strbuf_addf(&out_buffer.buf, LOCK_REQUEST, escaped);
free(escaped);
sprintf(timeout_header, "Timeout: Second-%ld", timeout);
dav_headers = curl_slist_append(dav_headers, timeout_header);
dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
slot = get_active_slot();
slot->results = &results;
curl_setup_http(slot->curl, url, DAV_LOCK, &out_buffer, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
lock = xcalloc(1, sizeof(*lock));
lock->timeout = -1;
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK) {
XML_Parser parser = XML_ParserCreate(NULL);
enum XML_Status result;
ctx.name = xcalloc(10, 1);
ctx.len = 0;
ctx.cdata = NULL;
ctx.userFunc = handle_new_lock_ctx;
ctx.userData = lock;
XML_SetUserData(parser, &ctx);
XML_SetElementHandler(parser, xml_start_tag,
xml_end_tag);
XML_SetCharacterDataHandler(parser, xml_cdata);
result = XML_Parse(parser, in_buffer.buf,
in_buffer.len, 1);
free(ctx.name);
if (result != XML_STATUS_OK) {
fprintf(stderr, "XML error: %s\n",
XML_ErrorString(
XML_GetErrorCode(parser)));
lock->timeout = -1;
}
XML_ParserFree(parser);
}
} else {
fprintf(stderr, "Unable to start LOCK request\n");
}
curl_slist_free_all(dav_headers);
strbuf_release(&out_buffer.buf);
strbuf_release(&in_buffer);
if (lock->token == NULL || lock->timeout <= 0) {
Avoid unnecessary "if-before-free" tests. This change removes all obvious useless if-before-free tests. E.g., it replaces code like this: if (some_expression) free (some_expression); with the now-equivalent: free (some_expression); It is equivalent not just because POSIX has required free(NULL) to work for a long time, but simply because it has worked for so long that no reasonable porting target fails the test. Here's some evidence from nearly 1.5 years ago: http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html FYI, the change below was prepared by running the following: git ls-files -z | xargs -0 \ perl -0x3b -pi -e \ 's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s' Note however, that it doesn't handle brace-enclosed blocks like "if (x) { free (x); }". But that's ok, since there were none like that in git sources. Beware: if you do use the above snippet, note that it can produce syntactically invalid C code. That happens when the affected "if"-statement has a matching "else". E.g., it would transform this if (x) free (x); else foo (); into this: free (x); else foo (); There were none of those here, either. If you're interested in automating detection of the useless tests, you might like the useless-if-before-free script in gnulib: [it *does* detect brace-enclosed free statements, and has a --name=S option to make it detect free-like functions with different names] http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free Addendum: Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-01 01:26:32 +08:00
free(lock->token);
free(lock->owner);
free(url);
free(lock);
lock = NULL;
} else {
lock->url = url;
lock->start_time = time(NULL);
lock->next = repo->locks;
repo->locks = lock;
}
return lock;
}
static int unlock_remote(struct remote_lock *lock)
{
struct active_request_slot *slot;
struct slot_results results;
struct remote_lock *prev = repo->locks;
struct curl_slist *dav_headers;
int rc = 0;
dav_headers = get_dav_token_headers(lock, DAV_HEADER_LOCK);
slot = get_active_slot();
slot->results = &results;
curl_setup_http_get(slot->curl, lock->url, DAV_UNLOCK);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK)
rc = 1;
else
fprintf(stderr, "UNLOCK HTTP error %ld\n",
results.http_code);
} else {
fprintf(stderr, "Unable to start UNLOCK request\n");
}
curl_slist_free_all(dav_headers);
if (repo->locks == lock) {
repo->locks = lock->next;
} else {
while (prev && prev->next != lock)
prev = prev->next;
if (prev)
prev->next = prev->next->next;
}
Avoid unnecessary "if-before-free" tests. This change removes all obvious useless if-before-free tests. E.g., it replaces code like this: if (some_expression) free (some_expression); with the now-equivalent: free (some_expression); It is equivalent not just because POSIX has required free(NULL) to work for a long time, but simply because it has worked for so long that no reasonable porting target fails the test. Here's some evidence from nearly 1.5 years ago: http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html FYI, the change below was prepared by running the following: git ls-files -z | xargs -0 \ perl -0x3b -pi -e \ 's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s' Note however, that it doesn't handle brace-enclosed blocks like "if (x) { free (x); }". But that's ok, since there were none like that in git sources. Beware: if you do use the above snippet, note that it can produce syntactically invalid C code. That happens when the affected "if"-statement has a matching "else". E.g., it would transform this if (x) free (x); else foo (); into this: free (x); else foo (); There were none of those here, either. If you're interested in automating detection of the useless tests, you might like the useless-if-before-free script in gnulib: [it *does* detect brace-enclosed free statements, and has a --name=S option to make it detect free-like functions with different names] http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free Addendum: Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-01 01:26:32 +08:00
free(lock->owner);
free(lock->url);
free(lock->token);
free(lock);
return rc;
}
static void remove_locks(void)
{
struct remote_lock *lock = repo->locks;
fprintf(stderr, "Removing remote locks...\n");
while (lock) {
struct remote_lock *next = lock->next;
unlock_remote(lock);
lock = next;
}
}
static void remove_locks_on_signal(int signo)
{
remove_locks();
sigchain_pop(signo);
raise(signo);
}
static void remote_ls(const char *path, int flags,
void (*userFunc)(struct remote_ls_ctx *ls),
void *userData);
static void process_ls_object(struct remote_ls_ctx *ls)
{
unsigned int *parent = (unsigned int *)ls->userData;
char *path = ls->dentry_name;
char *obj_hex;
if (!strcmp(ls->path, ls->dentry_name) && (ls->flags & IS_DIR)) {
remote_dir_exists[*parent] = 1;
return;
}
if (strlen(path) != 49)
return;
path += 8;
obj_hex = xmalloc(strlen(path));
/* NB: path is not null-terminated, can not use strlcpy here */
memcpy(obj_hex, path, 2);
strcpy(obj_hex + 2, path + 3);
one_remote_object(obj_hex);
free(obj_hex);
}
static void process_ls_ref(struct remote_ls_ctx *ls)
{
if (!strcmp(ls->path, ls->dentry_name) && (ls->dentry_flags & IS_DIR)) {
fprintf(stderr, " %s\n", ls->dentry_name);
return;
}
if (!(ls->dentry_flags & IS_DIR))
one_remote_ref(ls->dentry_name);
}
static void handle_remote_ls_ctx(struct xml_ctx *ctx, int tag_closed)
{
struct remote_ls_ctx *ls = (struct remote_ls_ctx *)ctx->userData;
if (tag_closed) {
if (!strcmp(ctx->name, DAV_PROPFIND_RESP) && ls->dentry_name) {
if (ls->dentry_flags & IS_DIR) {
/* ensure collection names end with slash */
str_end_url_with_slash(ls->dentry_name, &ls->dentry_name);
if (ls->flags & PROCESS_DIRS) {
ls->userFunc(ls);
}
if (strcmp(ls->dentry_name, ls->path) &&
ls->flags & RECURSIVE) {
remote_ls(ls->dentry_name,
ls->flags,
ls->userFunc,
ls->userData);
}
} else if (ls->flags & PROCESS_FILES) {
ls->userFunc(ls);
}
} else if (!strcmp(ctx->name, DAV_PROPFIND_NAME) && ctx->cdata) {
char *path = ctx->cdata;
if (*ctx->cdata == 'h') {
path = strstr(path, "//");
if (path) {
path = strchr(path+2, '/');
}
}
if (path) {
const char *url = repo->url;
if (repo->path)
url = repo->path;
if (strncmp(path, url, repo->path_len))
error("Parsed path '%s' does not match url: '%s'",
path, url);
else {
path += repo->path_len;
ls->dentry_name = xstrdup(path);
}
}
} else if (!strcmp(ctx->name, DAV_PROPFIND_COLLECTION)) {
ls->dentry_flags |= IS_DIR;
}
} else if (!strcmp(ctx->name, DAV_PROPFIND_RESP)) {
free(ls->dentry_name);
ls->dentry_name = NULL;
ls->dentry_flags = 0;
}
}
/*
* NEEDSWORK: remote_ls() ignores info/refs on the remote side. But it
* should _only_ heed the information from that file, instead of trying to
* determine the refs from the remote file system (badly: it does not even
* know about packed-refs).
*/
static void remote_ls(const char *path, int flags,
void (*userFunc)(struct remote_ls_ctx *ls),
void *userData)
{
char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
struct active_request_slot *slot;
struct slot_results results;
struct strbuf in_buffer = STRBUF_INIT;
struct buffer out_buffer = { STRBUF_INIT, 0 };
struct curl_slist *dav_headers = NULL;
struct xml_ctx ctx;
struct remote_ls_ctx ls;
ls.flags = flags;
ls.path = xstrdup(path);
ls.dentry_name = NULL;
ls.dentry_flags = 0;
ls.userData = userData;
ls.userFunc = userFunc;
sprintf(url, "%s%s", repo->url, path);
strbuf_addf(&out_buffer.buf, PROPFIND_ALL_REQUEST);
dav_headers = curl_slist_append(dav_headers, "Depth: 1");
dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
slot = get_active_slot();
slot->results = &results;
curl_setup_http(slot->curl, url, DAV_PROPFIND,
&out_buffer, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK) {
XML_Parser parser = XML_ParserCreate(NULL);
enum XML_Status result;
ctx.name = xcalloc(10, 1);
ctx.len = 0;
ctx.cdata = NULL;
ctx.userFunc = handle_remote_ls_ctx;
ctx.userData = &ls;
XML_SetUserData(parser, &ctx);
XML_SetElementHandler(parser, xml_start_tag,
xml_end_tag);
XML_SetCharacterDataHandler(parser, xml_cdata);
result = XML_Parse(parser, in_buffer.buf,
in_buffer.len, 1);
free(ctx.name);
if (result != XML_STATUS_OK) {
fprintf(stderr, "XML error: %s\n",
XML_ErrorString(
XML_GetErrorCode(parser)));
}
XML_ParserFree(parser);
}
} else {
fprintf(stderr, "Unable to start PROPFIND request\n");
}
free(ls.path);
free(url);
strbuf_release(&out_buffer.buf);
strbuf_release(&in_buffer);
curl_slist_free_all(dav_headers);
}
static void get_remote_object_list(unsigned char parent)
{
char path[] = "objects/XX/";
static const char hex[] = "0123456789abcdef";
unsigned int val = parent;
path[8] = hex[val >> 4];
path[9] = hex[val & 0xf];
remote_dir_exists[val] = 0;
remote_ls(path, (PROCESS_FILES | PROCESS_DIRS),
process_ls_object, &val);
}
static int locking_available(void)
{
struct active_request_slot *slot;
struct slot_results results;
struct strbuf in_buffer = STRBUF_INIT;
struct buffer out_buffer = { STRBUF_INIT, 0 };
struct curl_slist *dav_headers = NULL;
struct xml_ctx ctx;
int lock_flags = 0;
char *escaped;
escaped = xml_entities(repo->url);
strbuf_addf(&out_buffer.buf, PROPFIND_SUPPORTEDLOCK_REQUEST, escaped);
free(escaped);
dav_headers = curl_slist_append(dav_headers, "Depth: 0");
dav_headers = curl_slist_append(dav_headers, "Content-Type: text/xml");
slot = get_active_slot();
slot->results = &results;
curl_setup_http(slot->curl, repo->url, DAV_PROPFIND,
&out_buffer, fwrite_buffer);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
curl_easy_setopt(slot->curl, CURLOPT_FILE, &in_buffer);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result == CURLE_OK) {
XML_Parser parser = XML_ParserCreate(NULL);
enum XML_Status result;
ctx.name = xcalloc(10, 1);
ctx.len = 0;
ctx.cdata = NULL;
ctx.userFunc = handle_lockprop_ctx;
ctx.userData = &lock_flags;
XML_SetUserData(parser, &ctx);
XML_SetElementHandler(parser, xml_start_tag,
xml_end_tag);
result = XML_Parse(parser, in_buffer.buf,
in_buffer.len, 1);
free(ctx.name);
if (result != XML_STATUS_OK) {
fprintf(stderr, "XML error: %s\n",
XML_ErrorString(
XML_GetErrorCode(parser)));
lock_flags = 0;
}
XML_ParserFree(parser);
if (!lock_flags)
error("no DAV locking support on %s",
repo->url);
} else {
error("Cannot access URL %s, return code %d",
repo->url, results.curl_result);
lock_flags = 0;
}
} else {
error("Unable to start PROPFIND request on %s", repo->url);
}
strbuf_release(&out_buffer.buf);
strbuf_release(&in_buffer);
curl_slist_free_all(dav_headers);
return lock_flags;
}
static struct object_list **add_one_object(struct object *obj, struct object_list **p)
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
{
struct object_list *entry = xmalloc(sizeof(struct object_list));
entry->item = obj;
entry->next = *p;
*p = entry;
return &entry->next;
}
static struct object_list **process_blob(struct blob *blob,
struct object_list **p,
struct name_path *path,
const char *name)
{
struct object *obj = &blob->object;
obj->flags |= LOCAL;
if (obj->flags & (UNINTERESTING | SEEN))
return p;
obj->flags |= SEEN;
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
return add_one_object(obj, p);
}
static struct object_list **process_tree(struct tree *tree,
struct object_list **p,
struct name_path *path,
const char *name)
{
struct object *obj = &tree->object;
struct tree_desc desc;
tree_entry(): new tree-walking helper function This adds a "tree_entry()" function that combines the common operation of doing a "tree_entry_extract()" + "update_tree_entry()". It also has a simplified calling convention, designed for simple loops that traverse over a whole tree: the arguments are pointers to the tree descriptor and a name_entry structure to fill in, and it returns a boolean "true" if there was an entry left to be gotten in the tree. This allows tree traversal with struct tree_desc desc; struct name_entry entry; desc.buf = tree->buffer; desc.size = tree->size; while (tree_entry(&desc, &entry) { ... use "entry.{path, sha1, mode, pathlen}" ... } which is not only shorter than writing it out in full, it's hopefully less error prone too. [ It's actually a tad faster too - we don't need to recalculate the entry pathlength in both extract and update, but need to do it only once. Also, some callers can avoid doing a "strlen()" on the result, since it's returned as part of the name_entry structure. However, by now we're talking just 1% speedup on "git-rev-list --objects --all", and we're definitely at the point where tree walking is no longer the issue any more. ] NOTE! Not everybody wants to use this new helper function, since some of the tree walkers very much on purpose do the descriptor update separately from the entry extraction. So the "extract + update" sequence still remains as the core sequence, this is just a simplified interface. We should probably add a silly two-line inline helper function for initializing the descriptor from the "struct tree" too, just to cut down on the noise from that common "desc" initializer. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-31 00:45:45 +08:00
struct name_entry entry;
struct name_path me;
obj->flags |= LOCAL;
if (obj->flags & (UNINTERESTING | SEEN))
return p;
if (parse_tree(tree) < 0)
die("bad tree object %s", sha1_to_hex(obj->sha1));
obj->flags |= SEEN;
name = xstrdup(name);
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
p = add_one_object(obj, p);
me.up = path;
me.elem = name;
me.elem_len = strlen(name);
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry))
switch (object_type(entry.mode)) {
case OBJ_TREE:
tree_entry(): new tree-walking helper function This adds a "tree_entry()" function that combines the common operation of doing a "tree_entry_extract()" + "update_tree_entry()". It also has a simplified calling convention, designed for simple loops that traverse over a whole tree: the arguments are pointers to the tree descriptor and a name_entry structure to fill in, and it returns a boolean "true" if there was an entry left to be gotten in the tree. This allows tree traversal with struct tree_desc desc; struct name_entry entry; desc.buf = tree->buffer; desc.size = tree->size; while (tree_entry(&desc, &entry) { ... use "entry.{path, sha1, mode, pathlen}" ... } which is not only shorter than writing it out in full, it's hopefully less error prone too. [ It's actually a tad faster too - we don't need to recalculate the entry pathlength in both extract and update, but need to do it only once. Also, some callers can avoid doing a "strlen()" on the result, since it's returned as part of the name_entry structure. However, by now we're talking just 1% speedup on "git-rev-list --objects --all", and we're definitely at the point where tree walking is no longer the issue any more. ] NOTE! Not everybody wants to use this new helper function, since some of the tree walkers very much on purpose do the descriptor update separately from the entry extraction. So the "extract + update" sequence still remains as the core sequence, this is just a simplified interface. We should probably add a silly two-line inline helper function for initializing the descriptor from the "struct tree" too, just to cut down on the noise from that common "desc" initializer. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-31 00:45:45 +08:00
p = process_tree(lookup_tree(entry.sha1), p, &me, name);
break;
case OBJ_BLOB:
tree_entry(): new tree-walking helper function This adds a "tree_entry()" function that combines the common operation of doing a "tree_entry_extract()" + "update_tree_entry()". It also has a simplified calling convention, designed for simple loops that traverse over a whole tree: the arguments are pointers to the tree descriptor and a name_entry structure to fill in, and it returns a boolean "true" if there was an entry left to be gotten in the tree. This allows tree traversal with struct tree_desc desc; struct name_entry entry; desc.buf = tree->buffer; desc.size = tree->size; while (tree_entry(&desc, &entry) { ... use "entry.{path, sha1, mode, pathlen}" ... } which is not only shorter than writing it out in full, it's hopefully less error prone too. [ It's actually a tad faster too - we don't need to recalculate the entry pathlength in both extract and update, but need to do it only once. Also, some callers can avoid doing a "strlen()" on the result, since it's returned as part of the name_entry structure. However, by now we're talking just 1% speedup on "git-rev-list --objects --all", and we're definitely at the point where tree walking is no longer the issue any more. ] NOTE! Not everybody wants to use this new helper function, since some of the tree walkers very much on purpose do the descriptor update separately from the entry extraction. So the "extract + update" sequence still remains as the core sequence, this is just a simplified interface. We should probably add a silly two-line inline helper function for initializing the descriptor from the "struct tree" too, just to cut down on the noise from that common "desc" initializer. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-31 00:45:45 +08:00
p = process_blob(lookup_blob(entry.sha1), p, &me, name);
break;
default:
/* Subproject commit - not in this repository */
break;
}
free(tree->buffer);
tree->buffer = NULL;
return p;
}
static int get_delta(struct rev_info *revs, struct remote_lock *lock)
{
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
int i;
struct commit *commit;
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
struct object_list **p = &objects;
int count = 0;
while ((commit = get_revision(revs)) != NULL) {
p = process_tree(commit->tree, p, NULL, "");
commit->object.flags |= LOCAL;
if (!(commit->object.flags & UNINTERESTING))
count += add_send_request(&commit->object, lock);
}
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
for (i = 0; i < revs->pending.nr; i++) {
struct object_array_entry *entry = revs->pending.objects + i;
struct object *obj = entry->item;
const char *name = entry->name;
if (obj->flags & (UNINTERESTING | SEEN))
continue;
if (obj->type == OBJ_TAG) {
obj->flags |= SEEN;
Add "named object array" concept We've had this notion of a "object_list" for a long time, which eventually grew a "name" member because some users (notably git-rev-list) wanted to name each object as it is generated. That object_list is great for some things, but it isn't all that wonderful for others, and the "name" member is generally not used by everybody. This patch splits the users of the object_list array up into two: the traditional list users, who want the list-like format, and who don't actually use or want the name. And another class of users that really used the list as an extensible array, and generally wanted to name the objects. The patch is fairly straightforward, but it's also biggish. Most of it really just cleans things up: switching the revision parsing and listing over to the array makes things like the builtin-diff usage much simpler (we now see exactly how many members the array has, and we don't get the objects reversed from the order they were on the command line). One of the main reasons for doing this at all is that the malloc overhead of the simple object list was actually pretty high, and the array is just a lot denser. So this patch brings down memory usage by git-rev-list by just under 3% (on top of all the other memory use optimizations) on the mozilla archive. It does add more lines than it removes, and more importantly, it adds a whole new infrastructure for maintaining lists of objects, but on the other hand, the new dynamic array code is pretty obvious. The change to builtin-diff-tree.c shows a fairly good example of why an array interface is sometimes more natural, and just much simpler for everybody. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 08:42:35 +08:00
p = add_one_object(obj, p);
continue;
}
if (obj->type == OBJ_TREE) {
p = process_tree((struct tree *)obj, p, NULL, name);
continue;
}
if (obj->type == OBJ_BLOB) {
p = process_blob((struct blob *)obj, p, NULL, name);
continue;
}
die("unknown pending object %s (%s)", sha1_to_hex(obj->sha1), name);
}
while (objects) {
if (!(objects->item->flags & UNINTERESTING))
count += add_send_request(objects->item, lock);
objects = objects->next;
}
return count;
}
static int update_remote(unsigned char *sha1, struct remote_lock *lock)
{
struct active_request_slot *slot;
struct slot_results results;
struct buffer out_buffer = { STRBUF_INIT, 0 };
struct curl_slist *dav_headers;
dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
strbuf_addf(&out_buffer.buf, "%s\n", sha1_to_hex(sha1));
slot = get_active_slot();
slot->results = &results;
curl_setup_http(slot->curl, lock->url, DAV_PUT,
&out_buffer, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
strbuf_release(&out_buffer.buf);
if (results.curl_result != CURLE_OK) {
fprintf(stderr,
"PUT error: curl result=%d, HTTP code=%ld\n",
results.curl_result, results.http_code);
/* We should attempt recovery? */
return 0;
}
} else {
strbuf_release(&out_buffer.buf);
fprintf(stderr, "Unable to start PUT request\n");
return 0;
}
return 1;
}
static struct ref *remote_refs;
static void one_remote_ref(const char *refname)
{
struct ref *ref;
struct object *obj;
ref = alloc_ref(refname);
if (http_fetch_ref(repo->url, ref) != 0) {
fprintf(stderr,
"Unable to fetch ref %s from %s\n",
refname, repo->url);
free(ref);
return;
}
/*
* Fetch a copy of the object if it doesn't exist locally - it
* may be required for updating server info later.
*/
if (repo->can_update_info_refs && !has_sha1_file(ref->old_sha1)) {
obj = lookup_unknown_object(ref->old_sha1);
if (obj) {
fprintf(stderr, " fetch %s for %s\n",
sha1_to_hex(ref->old_sha1), refname);
add_fetch_request(obj);
}
}
ref->next = remote_refs;
remote_refs = ref;
}
static void get_dav_remote_heads(void)
{
remote_ls("refs/", (PROCESS_FILES | PROCESS_DIRS | RECURSIVE), process_ls_ref, NULL);
}
static void add_remote_info_ref(struct remote_ls_ctx *ls)
{
struct strbuf *buf = (struct strbuf *)ls->userData;
struct object *o;
int len;
char *ref_info;
struct ref *ref;
ref = alloc_ref(ls->dentry_name);
if (http_fetch_ref(repo->url, ref) != 0) {
fprintf(stderr,
"Unable to fetch ref %s from %s\n",
ls->dentry_name, repo->url);
aborted = 1;
free(ref);
return;
}
o = parse_object(ref->old_sha1);
if (!o) {
fprintf(stderr,
"Unable to parse object %s for remote ref %s\n",
sha1_to_hex(ref->old_sha1), ls->dentry_name);
aborted = 1;
free(ref);
return;
}
len = strlen(ls->dentry_name) + 42;
ref_info = xcalloc(len + 1, 1);
sprintf(ref_info, "%s %s\n",
sha1_to_hex(ref->old_sha1), ls->dentry_name);
fwrite_buffer(ref_info, 1, len, buf);
free(ref_info);
if (o->type == OBJ_TAG) {
o = deref_tag(o, ls->dentry_name, 0);
if (o) {
len = strlen(ls->dentry_name) + 45;
ref_info = xcalloc(len + 1, 1);
sprintf(ref_info, "%s %s^{}\n",
sha1_to_hex(o->sha1), ls->dentry_name);
fwrite_buffer(ref_info, 1, len, buf);
free(ref_info);
}
}
free(ref);
}
static void update_remote_info_refs(struct remote_lock *lock)
{
struct buffer buffer = { STRBUF_INIT, 0 };
struct active_request_slot *slot;
struct slot_results results;
struct curl_slist *dav_headers;
remote_ls("refs/", (PROCESS_FILES | RECURSIVE),
add_remote_info_ref, &buffer.buf);
if (!aborted) {
dav_headers = get_dav_token_headers(lock, DAV_HEADER_IF);
slot = get_active_slot();
slot->results = &results;
curl_setup_http(slot->curl, lock->url, DAV_PUT,
&buffer, fwrite_null);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, dav_headers);
if (start_active_slot(slot)) {
run_active_slot(slot);
if (results.curl_result != CURLE_OK) {
fprintf(stderr,
"PUT error: curl result=%d, HTTP code=%ld\n",
results.curl_result, results.http_code);
}
}
}
strbuf_release(&buffer.buf);
}
static int remote_exists(const char *path)
{
char *url = xmalloc(strlen(repo->url) + strlen(path) + 1);
int ret;
sprintf(url, "%s%s", repo->url, path);
switch (http_get_strbuf(url, NULL, NULL, 0)) {
case HTTP_OK:
ret = 1;
break;
case HTTP_MISSING_TARGET:
ret = 0;
break;
case HTTP_ERROR:
error("unable to access '%s': %s", url, curl_errorstr);
default:
ret = -1;
}
free(url);
return ret;
}
static void fetch_symref(const char *path, char **symref, unsigned char *sha1)
{
char *url;
struct strbuf buffer = STRBUF_INIT;
url = xmalloc(strlen(repo->url) + strlen(path) + 1);
sprintf(url, "%s%s", repo->url, path);
if (http_get_strbuf(url, NULL, &buffer, 0) != HTTP_OK)
die("Couldn't get %s for remote symref\n%s", url,
curl_errorstr);
free(url);
Avoid unnecessary "if-before-free" tests. This change removes all obvious useless if-before-free tests. E.g., it replaces code like this: if (some_expression) free (some_expression); with the now-equivalent: free (some_expression); It is equivalent not just because POSIX has required free(NULL) to work for a long time, but simply because it has worked for so long that no reasonable porting target fails the test. Here's some evidence from nearly 1.5 years ago: http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html FYI, the change below was prepared by running the following: git ls-files -z | xargs -0 \ perl -0x3b -pi -e \ 's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s' Note however, that it doesn't handle brace-enclosed blocks like "if (x) { free (x); }". But that's ok, since there were none like that in git sources. Beware: if you do use the above snippet, note that it can produce syntactically invalid C code. That happens when the affected "if"-statement has a matching "else". E.g., it would transform this if (x) free (x); else foo (); into this: free (x); else foo (); There were none of those here, either. If you're interested in automating detection of the useless tests, you might like the useless-if-before-free script in gnulib: [it *does* detect brace-enclosed free statements, and has a --name=S option to make it detect free-like functions with different names] http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free Addendum: Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>. Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-01 01:26:32 +08:00
free(*symref);
*symref = NULL;
hashclr(sha1);
if (buffer.len == 0)
return;
/* If it's a symref, set the refname; otherwise try for a sha1 */
if (!prefixcmp((char *)buffer.buf, "ref: ")) {
*symref = xmemdupz((char *)buffer.buf + 5, buffer.len - 6);
} else {
get_sha1_hex(buffer.buf, sha1);
}
strbuf_release(&buffer);
}
static int verify_merge_base(unsigned char *head_sha1, struct ref *remote)
{
struct commit *head = lookup_commit_or_die(head_sha1, "HEAD");
struct commit *branch = lookup_commit_or_die(remote->old_sha1, remote->name);
return in_merge_bases(branch, head);
}
static int delete_remote_branch(const char *pattern, int force)
{
struct ref *refs = remote_refs;
struct ref *remote_ref = NULL;
unsigned char head_sha1[20];
char *symref = NULL;
int match;
int patlen = strlen(pattern);
int i;
struct active_request_slot *slot;
struct slot_results results;
char *url;
/* Find the remote branch(es) matching the specified branch name */
for (match = 0; refs; refs = refs->next) {
char *name = refs->name;
int namelen = strlen(name);
if (namelen < patlen ||
memcmp(name + namelen - patlen, pattern, patlen))
continue;
if (namelen != patlen && name[namelen - patlen - 1] != '/')
continue;
match++;
remote_ref = refs;
}
if (match == 0)
return error("No remote branch matches %s", pattern);
if (match != 1)
return error("More than one remote branch matches %s",
pattern);
/*
* Remote HEAD must be a symref (not exactly foolproof; a remote
* symlink to a symref will look like a symref)
*/
fetch_symref("HEAD", &symref, head_sha1);
if (!symref)
return error("Remote HEAD is not a symref");
/* Remote branch must not be the remote HEAD */
for (i = 0; symref && i < MAXDEPTH; i++) {
if (!strcmp(remote_ref->name, symref))
return error("Remote branch %s is the current HEAD",
remote_ref->name);
fetch_symref(symref, &symref, head_sha1);
}
/* Run extra sanity checks if delete is not forced */
if (!force) {
/* Remote HEAD must resolve to a known object */
if (symref)
return error("Remote HEAD symrefs too deep");
if (is_null_sha1(head_sha1))
return error("Unable to resolve remote HEAD");
if (!has_sha1_file(head_sha1))
return error("Remote HEAD resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", sha1_to_hex(head_sha1));
/* Remote branch must resolve to a known object */
if (is_null_sha1(remote_ref->old_sha1))
return error("Unable to resolve remote branch %s",
remote_ref->name);
if (!has_sha1_file(remote_ref->old_sha1))
return error("Remote branch %s resolves to object %s\nwhich does not exist locally, perhaps you need to fetch?", remote_ref->name, sha1_to_hex(remote_ref->old_sha1));
/* Remote branch must be an ancestor of remote HEAD */
if (!verify_merge_base(head_sha1, remote_ref)) {
return error("The branch '%s' is not an ancestor "
"of your current HEAD.\n"
"If you are sure you want to delete it,"
" run:\n\t'git http-push -D %s %s'",
remote_ref->name, repo->url, pattern);
}
}
/* Send delete request */
fprintf(stderr, "Removing remote branch '%s'\n", remote_ref->name);
if (dry_run)
return 0;
url = xmalloc(strlen(repo->url) + strlen(remote_ref->name) + 1);
sprintf(url, "%s%s", repo->url, remote_ref->name);
slot = get_active_slot();
slot->results = &results;
curl_setup_http_get(slot->curl, url, DAV_DELETE);
if (start_active_slot(slot)) {
run_active_slot(slot);
free(url);
if (results.curl_result != CURLE_OK)
return error("DELETE request failed (%d/%ld)",
results.curl_result, results.http_code);
} else {
free(url);
return error("Unable to start DELETE request");
}
return 0;
}
static void run_request_queue(void)
{
#ifdef USE_CURL_MULTI
is_running_queue = 1;
fill_active_slots();
add_fill_function(NULL, fill_active_slot);
#endif
do {
finish_all_active_slots();
#ifdef USE_CURL_MULTI
fill_active_slots();
#endif
} while (request_queue_head && !aborted);
#ifdef USE_CURL_MULTI
is_running_queue = 0;
#endif
}
int main(int argc, char **argv)
{
struct transfer_request *request;
struct transfer_request *next_request;
int nr_refspec = 0;
char **refspec = NULL;
struct remote_lock *ref_lock = NULL;
struct remote_lock *info_ref_lock = NULL;
struct rev_info revs;
int delete_branch = 0;
int force_delete = 0;
int objects_to_send;
int rc = 0;
int i;
int new_refs;
struct ref *ref, *local_refs;
i18n: add infrastructure for translating Git with gettext Change the skeleton implementation of i18n in Git to one that can show localized strings to users for our C, Shell and Perl programs using either GNU libintl or the Solaris gettext implementation. This new internationalization support is enabled by default. If gettext isn't available, or if Git is compiled with NO_GETTEXT=YesPlease, Git falls back on its current behavior of showing interface messages in English. When using the autoconf script we'll auto-detect if the gettext libraries are installed and act appropriately. This change is somewhat large because as well as adding a C, Shell and Perl i18n interface we're adding a lot of tests for them, and for those tests to work we need a skeleton PO file to actually test translations. A minimal Icelandic translation is included for this purpose. Icelandic includes multi-byte characters which makes it easy to test various edge cases, and it's a language I happen to understand. The rest of the commit message goes into detail about various sub-parts of this commit. = Installation Gettext .mo files will be installed and looked for in the standard $(prefix)/share/locale path. GIT_TEXTDOMAINDIR can also be set to override that, but that's only intended to be used to test Git itself. = Perl Perl code that's to be localized should use the new Git::I18n module. It imports a __ function into the caller's package by default. Instead of using the high level Locale::TextDomain interface I've opted to use the low-level (equivalent to the C interface) Locale::Messages module, which Locale::TextDomain itself uses. Locale::TextDomain does a lot of redundant work we don't need, and some of it would potentially introduce bugs. It tries to set the $TEXTDOMAIN based on package of the caller, and has its own hardcoded paths where it'll search for messages. I found it easier just to completely avoid it rather than try to circumvent its behavior. In any case, this is an issue wholly internal Git::I18N. Its guts can be changed later if that's deemed necessary. See <AANLkTilYD_NyIZMyj9dHtVk-ylVBfvyxpCC7982LWnVd@mail.gmail.com> for a further elaboration on this topic. = Shell Shell code that's to be localized should use the git-sh-i18n library. It's basically just a wrapper for the system's gettext.sh. If gettext.sh isn't available we'll fall back on gettext(1) if it's available. The latter is available without the former on Solaris, which has its own non-GNU gettext implementation. We also need to emulate eval_gettext() there. If neither are present we'll use a dumb printf(1) fall-through wrapper. = About libcharset.h and langinfo.h We use libcharset to query the character set of the current locale if it's available. I.e. we'll use it instead of nl_langinfo if HAVE_LIBCHARSET_H is set. The GNU gettext manual recommends using langinfo.h's nl_langinfo(CODESET) to acquire the current character set, but on systems that have libcharset.h's locale_charset() using the latter is either saner, or the only option on those systems. GNU and Solaris have a nl_langinfo(CODESET), FreeBSD can use either, but MinGW and some others need to use libcharset.h's locale_charset() instead. =Credits This patch is based on work by Jeff Epler <jepler@unpythonic.net> who did the initial Makefile / C work, and a lot of comments from the Git mailing list, including Jonathan Nieder, Jakub Narebski, Johannes Sixt, Erik Faye-Lund, Peter Krefting, Junio C Hamano, Thomas Rast and others. [jc: squashed a small Makefile fix from Ramsay] Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-18 07:14:42 +08:00
git_setup_gettext();
git_extract_argv0_path(argv[0]);
repo = xcalloc(sizeof(*repo), 1);
argv++;
for (i = 1; i < argc; i++, argv++) {
char *arg = *argv;
if (*arg == '-') {
if (!strcmp(arg, "--all")) {
push_all = MATCH_REFS_ALL;
continue;
}
if (!strcmp(arg, "--force")) {
force_all = 1;
continue;
}
if (!strcmp(arg, "--dry-run")) {
dry_run = 1;
continue;
}
if (!strcmp(arg, "--helper-status")) {
helper_status = 1;
continue;
}
if (!strcmp(arg, "--verbose")) {
push_verbosely = 1;
http_is_verbose = 1;
continue;
}
if (!strcmp(arg, "-d")) {
delete_branch = 1;
continue;
}
if (!strcmp(arg, "-D")) {
delete_branch = 1;
force_delete = 1;
continue;
}
if (!strcmp(arg, "-h"))
usage(http_push_usage);
}
if (!repo->url) {
char *path = strstr(arg, "//");
str_end_url_with_slash(arg, &repo->url);
repo->path_len = strlen(repo->url);
if (path) {
repo->path = strchr(path+2, '/');
if (repo->path)
repo->path_len = strlen(repo->path);
}
continue;
}
refspec = argv;
nr_refspec = argc - i;
break;
}
#ifndef USE_CURL_MULTI
die("git-push is not available for http/https repository when not compiled with USE_CURL_MULTI");
#endif
if (!repo->url)
usage(http_push_usage);
if (delete_branch && nr_refspec != 1)
die("You must specify only one branch name when deleting a remote branch");
setup_git_directory();
memset(remote_dir_exists, -1, 256);
http_init(NULL, repo->url, 1);
#ifdef USE_CURL_MULTI
is_running_queue = 0;
#endif
/* Verify DAV compliance/lock support */
if (!locking_available()) {
rc = 1;
goto cleanup;
}
sigchain_push_common(remove_locks_on_signal);
/* Check whether the remote has server info files */
repo->can_update_info_refs = 0;
repo->has_info_refs = remote_exists("info/refs");
repo->has_info_packs = remote_exists("objects/info/packs");
if (repo->has_info_refs) {
info_ref_lock = lock_remote("info/refs", LOCK_TIME);
if (info_ref_lock)
repo->can_update_info_refs = 1;
else {
error("cannot lock existing info/refs");
rc = 1;
goto cleanup;
}
}
if (repo->has_info_packs)
fetch_indices();
/* Get a list of all local and remote heads to validate refspecs */
local_refs = get_local_heads();
fprintf(stderr, "Fetching remote heads...\n");
get_dav_remote_heads();
run_request_queue();
/* Remove a remote branch if -d or -D was specified */
if (delete_branch) {
if (delete_remote_branch(refspec[0], force_delete) == -1) {
fprintf(stderr, "Unable to delete remote branch %s\n",
refspec[0]);
if (helper_status)
printf("error %s cannot remove\n", refspec[0]);
}
goto cleanup;
}
/* match them up */
if (match_push_refs(local_refs, &remote_refs,
nr_refspec, (const char **) refspec, push_all)) {
rc = -1;
goto cleanup;
}
if (!remote_refs) {
fprintf(stderr, "No refs in common and none specified; doing nothing.\n");
if (helper_status)
printf("error null no match\n");
rc = 0;
goto cleanup;
}
new_refs = 0;
for (ref = remote_refs; ref; ref = ref->next) {
char old_hex[60], *new_hex;
const char *commit_argv[5];
int commit_argc;
char *new_sha1_hex, *old_sha1_hex;
if (!ref->peer_ref)
continue;
if (is_null_sha1(ref->peer_ref->new_sha1)) {
if (delete_remote_branch(ref->name, 1) == -1) {
error("Could not remove %s", ref->name);
if (helper_status)
printf("error %s cannot remove\n", ref->name);
rc = -4;
}
else if (helper_status)
printf("ok %s\n", ref->name);
new_refs++;
continue;
}
if (!hashcmp(ref->old_sha1, ref->peer_ref->new_sha1)) {
if (push_verbosely)
fprintf(stderr, "'%s': up-to-date\n", ref->name);
if (helper_status)
printf("ok %s up to date\n", ref->name);
continue;
}
if (!force_all &&
!is_null_sha1(ref->old_sha1) &&
!ref->force) {
if (!has_sha1_file(ref->old_sha1) ||
!ref_newer(ref->peer_ref->new_sha1,
ref->old_sha1)) {
/*
* We do not have the remote ref, or
* we know that the remote ref is not
* an ancestor of what we are trying to
* push. Either way this can be losing
* commits at the remote end and likely
* we were not up to date to begin with.
*/
error("remote '%s' is not an ancestor of\n"
"local '%s'.\n"
"Maybe you are not up-to-date and "
"need to pull first?",
ref->name,
ref->peer_ref->name);
if (helper_status)
printf("error %s non-fast forward\n", ref->name);
rc = -2;
continue;
}
}
hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
new_refs++;
strcpy(old_hex, sha1_to_hex(ref->old_sha1));
new_hex = sha1_to_hex(ref->new_sha1);
fprintf(stderr, "updating '%s'", ref->name);
if (strcmp(ref->name, ref->peer_ref->name))
fprintf(stderr, " using '%s'", ref->peer_ref->name);
fprintf(stderr, "\n from %s\n to %s\n", old_hex, new_hex);
if (dry_run) {
if (helper_status)
printf("ok %s\n", ref->name);
continue;
}
/* Lock remote branch ref */
ref_lock = lock_remote(ref->name, LOCK_TIME);
if (ref_lock == NULL) {
fprintf(stderr, "Unable to lock remote branch %s\n",
ref->name);
if (helper_status)
printf("error %s lock error\n", ref->name);
rc = 1;
continue;
}
/* Set up revision info for this refspec */
commit_argc = 3;
new_sha1_hex = xstrdup(sha1_to_hex(ref->new_sha1));
old_sha1_hex = NULL;
commit_argv[1] = "--objects";
commit_argv[2] = new_sha1_hex;
if (!push_all && !is_null_sha1(ref->old_sha1)) {
old_sha1_hex = xmalloc(42);
sprintf(old_sha1_hex, "^%s",
sha1_to_hex(ref->old_sha1));
commit_argv[3] = old_sha1_hex;
commit_argc++;
}
commit_argv[commit_argc] = NULL;
init_revisions(&revs, setup_git_directory());
setup_revisions(commit_argc, commit_argv, &revs, NULL);
revs.edge_hint = 0; /* just in case */
free(new_sha1_hex);
if (old_sha1_hex) {
free(old_sha1_hex);
commit_argv[1] = NULL;
}
/* Generate a list of objects that need to be pushed */
pushing = 0;
if (prepare_revision_walk(&revs))
die("revision walk setup failed");
mark_edges_uninteresting(revs.commits, &revs, NULL);
objects_to_send = get_delta(&revs, ref_lock);
finish_all_active_slots();
/* Push missing objects to remote, this would be a
convenient time to pack them first if appropriate. */
pushing = 1;
if (objects_to_send)
fprintf(stderr, " sending %d objects\n",
objects_to_send);
run_request_queue();
/* Update the remote branch if all went well */
if (aborted || !update_remote(ref->new_sha1, ref_lock))
rc = 1;
if (!rc)
fprintf(stderr, " done\n");
if (helper_status)
printf("%s %s\n", !rc ? "ok" : "error", ref->name);
unlock_remote(ref_lock);
check_locks();
}
/* Update remote server info if appropriate */
if (repo->has_info_refs && new_refs) {
if (info_ref_lock && repo->can_update_info_refs) {
fprintf(stderr, "Updating remote server info\n");
if (!dry_run)
update_remote_info_refs(info_ref_lock);
} else {
fprintf(stderr, "Unable to update server info\n");
}
}
cleanup:
if (info_ref_lock)
unlock_remote(info_ref_lock);
free(repo);
http_cleanup();
request = request_queue_head;
while (request != NULL) {
next_request = request->next;
release_request(request);
request = next_request;
}
return rc;
}