mirror of
https://github.com/git/git.git
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501afcb8b0
When a user is registered in a Windows domain, it is really easy to obtain the email address. So let's do that. Suggested by Lutz Roeder. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
536 lines
13 KiB
C
536 lines
13 KiB
C
/*
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* ident.c
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*
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* create git identifier lines of the form "name <email> date"
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*
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* Copyright (C) 2005 Linus Torvalds
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*/
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#include "cache.h"
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#include "config.h"
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static struct strbuf git_default_name = STRBUF_INIT;
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static struct strbuf git_default_email = STRBUF_INIT;
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static struct strbuf git_default_date = STRBUF_INIT;
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static int default_email_is_bogus;
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static int default_name_is_bogus;
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static int ident_use_config_only;
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#define IDENT_NAME_GIVEN 01
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#define IDENT_MAIL_GIVEN 02
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#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN)
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static int committer_ident_explicitly_given;
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static int author_ident_explicitly_given;
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static int ident_config_given;
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#ifdef NO_GECOS_IN_PWENT
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#define get_gecos(ignored) "&"
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#else
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#define get_gecos(struct_passwd) ((struct_passwd)->pw_gecos)
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#endif
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static struct passwd *xgetpwuid_self(int *is_bogus)
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{
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struct passwd *pw;
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errno = 0;
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pw = getpwuid(getuid());
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if (!pw) {
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static struct passwd fallback;
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fallback.pw_name = "unknown";
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#ifndef NO_GECOS_IN_PWENT
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fallback.pw_gecos = "Unknown";
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#endif
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pw = &fallback;
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if (is_bogus)
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*is_bogus = 1;
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}
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return pw;
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}
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static void copy_gecos(const struct passwd *w, struct strbuf *name)
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{
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char *src;
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/* Traditionally GECOS field had office phone numbers etc, separated
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* with commas. Also & stands for capitalized form of the login name.
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*/
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for (src = get_gecos(w); *src && *src != ','; src++) {
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int ch = *src;
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if (ch != '&')
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strbuf_addch(name, ch);
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else {
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/* Sorry, Mr. McDonald... */
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strbuf_addch(name, toupper(*w->pw_name));
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strbuf_addstr(name, w->pw_name + 1);
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}
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}
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}
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static int add_mailname_host(struct strbuf *buf)
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{
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FILE *mailname;
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struct strbuf mailnamebuf = STRBUF_INIT;
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mailname = fopen_or_warn("/etc/mailname", "r");
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if (!mailname)
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return -1;
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if (strbuf_getline(&mailnamebuf, mailname) == EOF) {
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if (ferror(mailname))
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warning_errno("cannot read /etc/mailname");
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strbuf_release(&mailnamebuf);
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fclose(mailname);
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return -1;
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}
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/* success! */
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strbuf_addbuf(buf, &mailnamebuf);
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strbuf_release(&mailnamebuf);
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fclose(mailname);
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return 0;
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}
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static int canonical_name(const char *host, struct strbuf *out)
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{
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int status = -1;
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#ifndef NO_IPV6
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struct addrinfo hints, *ai;
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memset (&hints, '\0', sizeof (hints));
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hints.ai_flags = AI_CANONNAME;
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if (!getaddrinfo(host, NULL, &hints, &ai)) {
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if (ai && ai->ai_canonname && strchr(ai->ai_canonname, '.')) {
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strbuf_addstr(out, ai->ai_canonname);
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status = 0;
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}
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freeaddrinfo(ai);
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}
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#else
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struct hostent *he = gethostbyname(host);
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if (he && strchr(he->h_name, '.')) {
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strbuf_addstr(out, he->h_name);
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status = 0;
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}
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#endif /* NO_IPV6 */
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return status;
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}
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static void add_domainname(struct strbuf *out, int *is_bogus)
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{
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char buf[HOST_NAME_MAX + 1];
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if (xgethostname(buf, sizeof(buf))) {
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warning_errno("cannot get host name");
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strbuf_addstr(out, "(none)");
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*is_bogus = 1;
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return;
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}
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if (strchr(buf, '.'))
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strbuf_addstr(out, buf);
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else if (canonical_name(buf, out) < 0) {
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strbuf_addf(out, "%s.(none)", buf);
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*is_bogus = 1;
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}
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}
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static void copy_email(const struct passwd *pw, struct strbuf *email,
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int *is_bogus)
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{
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/*
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* Make up a fake email address
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* (name + '@' + hostname [+ '.' + domainname])
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*/
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strbuf_addstr(email, pw->pw_name);
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strbuf_addch(email, '@');
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if (!add_mailname_host(email))
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return; /* read from "/etc/mailname" (Debian) */
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add_domainname(email, is_bogus);
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}
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const char *ident_default_name(void)
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{
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if (!(ident_config_given & IDENT_NAME_GIVEN) && !git_default_name.len) {
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copy_gecos(xgetpwuid_self(&default_name_is_bogus), &git_default_name);
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strbuf_trim(&git_default_name);
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}
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return git_default_name.buf;
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}
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const char *ident_default_email(void)
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{
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if (!(ident_config_given & IDENT_MAIL_GIVEN) && !git_default_email.len) {
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const char *email = getenv("EMAIL");
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if (email && email[0]) {
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strbuf_addstr(&git_default_email, email);
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committer_ident_explicitly_given |= IDENT_MAIL_GIVEN;
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author_ident_explicitly_given |= IDENT_MAIL_GIVEN;
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} else if ((email = query_user_email()) && email[0]) {
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strbuf_addstr(&git_default_email, email);
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free((char *)email);
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} else
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copy_email(xgetpwuid_self(&default_email_is_bogus),
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&git_default_email, &default_email_is_bogus);
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strbuf_trim(&git_default_email);
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}
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return git_default_email.buf;
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}
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static const char *ident_default_date(void)
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{
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if (!git_default_date.len)
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datestamp(&git_default_date);
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return git_default_date.buf;
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}
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void reset_ident_date(void)
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{
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strbuf_reset(&git_default_date);
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}
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static int crud(unsigned char c)
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{
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return c <= 32 ||
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c == '.' ||
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c == ',' ||
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c == ':' ||
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c == ';' ||
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c == '<' ||
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c == '>' ||
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c == '"' ||
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c == '\\' ||
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c == '\'';
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}
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static int has_non_crud(const char *str)
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{
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for (; *str; str++) {
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if (!crud(*str))
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return 1;
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}
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return 0;
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}
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/*
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* Copy over a string to the destination, but avoid special
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* characters ('\n', '<' and '>') and remove crud at the end
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*/
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static void strbuf_addstr_without_crud(struct strbuf *sb, const char *src)
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{
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size_t i, len;
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unsigned char c;
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/* Remove crud from the beginning.. */
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while ((c = *src) != 0) {
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if (!crud(c))
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break;
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src++;
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}
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/* Remove crud from the end.. */
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len = strlen(src);
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while (len > 0) {
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c = src[len-1];
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if (!crud(c))
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break;
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--len;
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}
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/*
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* Copy the rest to the buffer, but avoid the special
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* characters '\n' '<' and '>' that act as delimiters on
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* an identification line. We can only remove crud, never add it,
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* so 'len' is our maximum.
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*/
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strbuf_grow(sb, len);
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for (i = 0; i < len; i++) {
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c = *src++;
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switch (c) {
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case '\n': case '<': case '>':
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continue;
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}
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sb->buf[sb->len++] = c;
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}
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sb->buf[sb->len] = '\0';
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}
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/*
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* Reverse of fmt_ident(); given an ident line, split the fields
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* to allow the caller to parse it.
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* Signal a success by returning 0, but date/tz fields of the result
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* can still be NULL if the input line only has the name/email part
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* (e.g. reading from a reflog entry).
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*/
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int split_ident_line(struct ident_split *split, const char *line, int len)
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{
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const char *cp;
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size_t span;
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int status = -1;
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memset(split, 0, sizeof(*split));
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split->name_begin = line;
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for (cp = line; *cp && cp < line + len; cp++)
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if (*cp == '<') {
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split->mail_begin = cp + 1;
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break;
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}
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if (!split->mail_begin)
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return status;
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for (cp = split->mail_begin - 2; line <= cp; cp--)
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if (!isspace(*cp)) {
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split->name_end = cp + 1;
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break;
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}
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if (!split->name_end) {
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/* no human readable name */
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split->name_end = split->name_begin;
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}
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for (cp = split->mail_begin; cp < line + len; cp++)
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if (*cp == '>') {
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split->mail_end = cp;
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break;
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}
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if (!split->mail_end)
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return status;
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/*
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* Look from the end-of-line to find the trailing ">" of the mail
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* address, even though we should already know it as split->mail_end.
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* This can help in cases of broken idents with an extra ">" somewhere
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* in the email address. Note that we are assuming the timestamp will
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* never have a ">" in it.
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*
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* Note that we will always find some ">" before going off the front of
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* the string, because will always hit the split->mail_end closing
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* bracket.
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*/
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for (cp = line + len - 1; *cp != '>'; cp--)
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;
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for (cp = cp + 1; cp < line + len && isspace(*cp); cp++)
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;
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if (line + len <= cp)
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goto person_only;
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split->date_begin = cp;
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span = strspn(cp, "0123456789");
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if (!span)
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goto person_only;
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split->date_end = split->date_begin + span;
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for (cp = split->date_end; cp < line + len && isspace(*cp); cp++)
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;
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if (line + len <= cp || (*cp != '+' && *cp != '-'))
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goto person_only;
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split->tz_begin = cp;
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span = strspn(cp + 1, "0123456789");
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if (!span)
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goto person_only;
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split->tz_end = split->tz_begin + 1 + span;
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return 0;
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person_only:
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split->date_begin = NULL;
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split->date_end = NULL;
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split->tz_begin = NULL;
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split->tz_end = NULL;
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return 0;
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}
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static const char *env_hint =
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N_("\n"
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"*** Please tell me who you are.\n"
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"\n"
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"Run\n"
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"\n"
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" git config --global user.email \"you@example.com\"\n"
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" git config --global user.name \"Your Name\"\n"
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"\n"
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"to set your account\'s default identity.\n"
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"Omit --global to set the identity only in this repository.\n"
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"\n");
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const char *fmt_ident(const char *name, const char *email,
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const char *date_str, int flag)
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{
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static struct strbuf ident = STRBUF_INIT;
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int strict = (flag & IDENT_STRICT);
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int want_date = !(flag & IDENT_NO_DATE);
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int want_name = !(flag & IDENT_NO_NAME);
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if (!email) {
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if (strict && ident_use_config_only
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&& !(ident_config_given & IDENT_MAIL_GIVEN)) {
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fputs(_(env_hint), stderr);
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die(_("no email was given and auto-detection is disabled"));
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}
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email = ident_default_email();
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if (strict && default_email_is_bogus) {
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fputs(_(env_hint), stderr);
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die(_("unable to auto-detect email address (got '%s')"), email);
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}
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}
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if (want_name) {
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int using_default = 0;
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if (!name) {
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if (strict && ident_use_config_only
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&& !(ident_config_given & IDENT_NAME_GIVEN)) {
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fputs(_(env_hint), stderr);
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die(_("no name was given and auto-detection is disabled"));
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}
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name = ident_default_name();
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using_default = 1;
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if (strict && default_name_is_bogus) {
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fputs(_(env_hint), stderr);
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die(_("unable to auto-detect name (got '%s')"), name);
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}
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}
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if (!*name) {
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struct passwd *pw;
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if (strict) {
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if (using_default)
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fputs(_(env_hint), stderr);
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die(_("empty ident name (for <%s>) not allowed"), email);
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}
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pw = xgetpwuid_self(NULL);
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name = pw->pw_name;
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}
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if (strict && !has_non_crud(name))
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die(_("name consists only of disallowed characters: %s"), name);
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}
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strbuf_reset(&ident);
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if (want_name) {
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strbuf_addstr_without_crud(&ident, name);
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strbuf_addstr(&ident, " <");
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}
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strbuf_addstr_without_crud(&ident, email);
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if (want_name)
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strbuf_addch(&ident, '>');
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if (want_date) {
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strbuf_addch(&ident, ' ');
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if (date_str && date_str[0]) {
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if (parse_date(date_str, &ident) < 0)
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die(_("invalid date format: %s"), date_str);
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}
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else
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strbuf_addstr(&ident, ident_default_date());
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}
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return ident.buf;
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}
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const char *fmt_name(const char *name, const char *email)
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{
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return fmt_ident(name, email, NULL, IDENT_STRICT | IDENT_NO_DATE);
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}
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const char *git_author_info(int flag)
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{
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if (getenv("GIT_AUTHOR_NAME"))
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author_ident_explicitly_given |= IDENT_NAME_GIVEN;
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if (getenv("GIT_AUTHOR_EMAIL"))
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author_ident_explicitly_given |= IDENT_MAIL_GIVEN;
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return fmt_ident(getenv("GIT_AUTHOR_NAME"),
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getenv("GIT_AUTHOR_EMAIL"),
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getenv("GIT_AUTHOR_DATE"),
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flag);
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}
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const char *git_committer_info(int flag)
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{
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if (getenv("GIT_COMMITTER_NAME"))
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committer_ident_explicitly_given |= IDENT_NAME_GIVEN;
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if (getenv("GIT_COMMITTER_EMAIL"))
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committer_ident_explicitly_given |= IDENT_MAIL_GIVEN;
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return fmt_ident(getenv("GIT_COMMITTER_NAME"),
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getenv("GIT_COMMITTER_EMAIL"),
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getenv("GIT_COMMITTER_DATE"),
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flag);
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}
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static int ident_is_sufficient(int user_ident_explicitly_given)
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{
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#ifndef WINDOWS
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return (user_ident_explicitly_given & IDENT_MAIL_GIVEN);
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#else
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return (user_ident_explicitly_given == IDENT_ALL_GIVEN);
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#endif
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}
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int committer_ident_sufficiently_given(void)
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{
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return ident_is_sufficient(committer_ident_explicitly_given);
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}
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int author_ident_sufficiently_given(void)
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{
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return ident_is_sufficient(author_ident_explicitly_given);
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}
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int git_ident_config(const char *var, const char *value, void *data)
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{
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if (!strcmp(var, "user.useconfigonly")) {
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ident_use_config_only = git_config_bool(var, value);
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return 0;
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}
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if (!strcmp(var, "user.name")) {
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if (!value)
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return config_error_nonbool(var);
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strbuf_reset(&git_default_name);
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strbuf_addstr(&git_default_name, value);
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committer_ident_explicitly_given |= IDENT_NAME_GIVEN;
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author_ident_explicitly_given |= IDENT_NAME_GIVEN;
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ident_config_given |= IDENT_NAME_GIVEN;
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return 0;
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}
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if (!strcmp(var, "user.email")) {
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if (!value)
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return config_error_nonbool(var);
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strbuf_reset(&git_default_email);
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strbuf_addstr(&git_default_email, value);
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committer_ident_explicitly_given |= IDENT_MAIL_GIVEN;
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author_ident_explicitly_given |= IDENT_MAIL_GIVEN;
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ident_config_given |= IDENT_MAIL_GIVEN;
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return 0;
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}
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return 0;
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}
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static int buf_cmp(const char *a_begin, const char *a_end,
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const char *b_begin, const char *b_end)
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{
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int a_len = a_end - a_begin;
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int b_len = b_end - b_begin;
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int min = a_len < b_len ? a_len : b_len;
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int cmp;
|
|
|
|
cmp = memcmp(a_begin, b_begin, min);
|
|
if (cmp)
|
|
return cmp;
|
|
|
|
return a_len - b_len;
|
|
}
|
|
|
|
int ident_cmp(const struct ident_split *a,
|
|
const struct ident_split *b)
|
|
{
|
|
int cmp;
|
|
|
|
cmp = buf_cmp(a->mail_begin, a->mail_end,
|
|
b->mail_begin, b->mail_end);
|
|
if (cmp)
|
|
return cmp;
|
|
|
|
return buf_cmp(a->name_begin, a->name_end,
|
|
b->name_begin, b->name_end);
|
|
}
|