diff options
Diffstat (limited to 'third_party/git/ident.c')
| -rw-r--r-- | third_party/git/ident.c | 635 |
1 files changed, 0 insertions, 635 deletions
diff --git a/third_party/git/ident.c b/third_party/git/ident.c deleted file mode 100644 index e666ee4e59..0000000000 --- a/third_party/git/ident.c +++ /dev/null @@ -1,635 +0,0 @@ -/* - * ident.c - * - * create git identifier lines of the form "name <email> date" - * - * Copyright (C) 2005 Linus Torvalds - */ -#include "cache.h" -#include "config.h" - -static struct strbuf git_default_name = STRBUF_INIT; -static struct strbuf git_default_email = STRBUF_INIT; -static struct strbuf git_default_date = STRBUF_INIT; -static struct strbuf git_author_name = STRBUF_INIT; -static struct strbuf git_author_email = STRBUF_INIT; -static struct strbuf git_committer_name = STRBUF_INIT; -static struct strbuf git_committer_email = STRBUF_INIT; -static int default_email_is_bogus; -static int default_name_is_bogus; - -static int ident_use_config_only; - -#define IDENT_NAME_GIVEN 01 -#define IDENT_MAIL_GIVEN 02 -#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN|IDENT_MAIL_GIVEN) -static int committer_ident_explicitly_given; -static int author_ident_explicitly_given; -static int ident_config_given; - -#ifdef NO_GECOS_IN_PWENT -#define get_gecos(ignored) "&" -#else -#define get_gecos(struct_passwd) ((struct_passwd)->pw_gecos) -#endif - -static struct passwd *xgetpwuid_self(int *is_bogus) -{ - struct passwd *pw; - - errno = 0; - pw = getpwuid(getuid()); - if (!pw) { - static struct passwd fallback; - fallback.pw_name = "unknown"; -#ifndef NO_GECOS_IN_PWENT - fallback.pw_gecos = "Unknown"; -#endif - pw = &fallback; - if (is_bogus) - *is_bogus = 1; - } - return pw; -} - -static void copy_gecos(const struct passwd *w, struct strbuf *name) -{ - char *src; - - /* Traditionally GECOS field had office phone numbers etc, separated - * with commas. Also & stands for capitalized form of the login name. - */ - - for (src = get_gecos(w); *src && *src != ','; src++) { - int ch = *src; - if (ch != '&') - strbuf_addch(name, ch); - else { - /* Sorry, Mr. McDonald... */ - strbuf_addch(name, toupper(*w->pw_name)); - strbuf_addstr(name, w->pw_name + 1); - } - } -} - -static int add_mailname_host(struct strbuf *buf) -{ - FILE *mailname; - struct strbuf mailnamebuf = STRBUF_INIT; - - mailname = fopen_or_warn("/etc/mailname", "r"); - if (!mailname) - return -1; - - if (strbuf_getline(&mailnamebuf, mailname) == EOF) { - if (ferror(mailname)) - warning_errno("cannot read /etc/mailname"); - strbuf_release(&mailnamebuf); - fclose(mailname); - return -1; - } - /* success! */ - strbuf_addbuf(buf, &mailnamebuf); - strbuf_release(&mailnamebuf); - fclose(mailname); - return 0; -} - -static int canonical_name(const char *host, struct strbuf *out) -{ - int status = -1; - -#ifndef NO_IPV6 - struct addrinfo hints, *ai; - memset (&hints, '\0', sizeof (hints)); - hints.ai_flags = AI_CANONNAME; - if (!getaddrinfo(host, NULL, &hints, &ai)) { - if (ai && ai->ai_canonname && strchr(ai->ai_canonname, '.')) { - strbuf_addstr(out, ai->ai_canonname); - status = 0; - } - freeaddrinfo(ai); - } -#else - struct hostent *he = gethostbyname(host); - if (he && strchr(he->h_name, '.')) { - strbuf_addstr(out, he->h_name); - status = 0; - } -#endif /* NO_IPV6 */ - - return status; -} - -static void add_domainname(struct strbuf *out, int *is_bogus) -{ - char buf[HOST_NAME_MAX + 1]; - - if (xgethostname(buf, sizeof(buf))) { - warning_errno("cannot get host name"); - strbuf_addstr(out, "(none)"); - *is_bogus = 1; - return; - } - if (strchr(buf, '.')) - strbuf_addstr(out, buf); - else if (canonical_name(buf, out) < 0) { - strbuf_addf(out, "%s.(none)", buf); - *is_bogus = 1; - } -} - -static void copy_email(const struct passwd *pw, struct strbuf *email, - int *is_bogus) -{ - /* - * Make up a fake email address - * (name + '@' + hostname [+ '.' + domainname]) - */ - strbuf_addstr(email, pw->pw_name); - strbuf_addch(email, '@'); - - if (!add_mailname_host(email)) - return; /* read from "/etc/mailname" (Debian) */ - add_domainname(email, is_bogus); -} - -const char *ident_default_name(void) -{ - if (!(ident_config_given & IDENT_NAME_GIVEN) && !git_default_name.len) { - copy_gecos(xgetpwuid_self(&default_name_is_bogus), &git_default_name); - strbuf_trim(&git_default_name); - } - return git_default_name.buf; -} - -const char *ident_default_email(void) -{ - if (!(ident_config_given & IDENT_MAIL_GIVEN) && !git_default_email.len) { - const char *email = getenv("EMAIL"); - - if (email && email[0]) { - strbuf_addstr(&git_default_email, email); - committer_ident_explicitly_given |= IDENT_MAIL_GIVEN; - author_ident_explicitly_given |= IDENT_MAIL_GIVEN; - } else if ((email = query_user_email()) && email[0]) { - strbuf_addstr(&git_default_email, email); - free((char *)email); - } else - copy_email(xgetpwuid_self(&default_email_is_bogus), - &git_default_email, &default_email_is_bogus); - strbuf_trim(&git_default_email); - } - return git_default_email.buf; -} - -static const char *ident_default_date(void) -{ - if (!git_default_date.len) - datestamp(&git_default_date); - return git_default_date.buf; -} - -void reset_ident_date(void) -{ - strbuf_reset(&git_default_date); -} - -static int crud(unsigned char c) -{ - return c <= 32 || - c == '.' || - c == ',' || - c == ':' || - c == ';' || - c == '<' || - c == '>' || - c == '"' || - c == '\\' || - c == '\''; -} - -static int has_non_crud(const char *str) -{ - for (; *str; str++) { - if (!crud(*str)) - return 1; - } - return 0; -} - -/* - * Copy over a string to the destination, but avoid special - * characters ('\n', '<' and '>') and remove crud at the end - */ -static void strbuf_addstr_without_crud(struct strbuf *sb, const char *src) -{ - size_t i, len; - unsigned char c; - - /* Remove crud from the beginning.. */ - while ((c = *src) != 0) { - if (!crud(c)) - break; - src++; - } - - /* Remove crud from the end.. */ - len = strlen(src); - while (len > 0) { - c = src[len-1]; - if (!crud(c)) - break; - --len; - } - - /* - * Copy the rest to the buffer, but avoid the special - * characters '\n' '<' and '>' that act as delimiters on - * an identification line. We can only remove crud, never add it, - * so 'len' is our maximum. - */ - strbuf_grow(sb, len); - for (i = 0; i < len; i++) { - c = *src++; - switch (c) { - case '\n': case '<': case '>': - continue; - } - sb->buf[sb->len++] = c; - } - sb->buf[sb->len] = '\0'; -} - -/* - * Reverse of fmt_ident(); given an ident line, split the fields - * to allow the caller to parse it. - * Signal a success by returning 0, but date/tz fields of the result - * can still be NULL if the input line only has the name/email part - * (e.g. reading from a reflog entry). - */ -int split_ident_line(struct ident_split *split, const char *line, int len) -{ - const char *cp; - size_t span; - int status = -1; - - memset(split, 0, sizeof(*split)); - - split->name_begin = line; - for (cp = line; *cp && cp < line + len; cp++) - if (*cp == '<') { - split->mail_begin = cp + 1; - break; - } - if (!split->mail_begin) - return status; - - for (cp = split->mail_begin - 2; line <= cp; cp--) - if (!isspace(*cp)) { - split->name_end = cp + 1; - break; - } - if (!split->name_end) { - /* no human readable name */ - split->name_end = split->name_begin; - } - - for (cp = split->mail_begin; cp < line + len; cp++) - if (*cp == '>') { - split->mail_end = cp; - break; - } - if (!split->mail_end) - return status; - - /* - * Look from the end-of-line to find the trailing ">" of the mail - * address, even though we should already know it as split->mail_end. - * This can help in cases of broken idents with an extra ">" somewhere - * in the email address. Note that we are assuming the timestamp will - * never have a ">" in it. - * - * Note that we will always find some ">" before going off the front of - * the string, because will always hit the split->mail_end closing - * bracket. - */ - for (cp = line + len - 1; *cp != '>'; cp--) - ; - - for (cp = cp + 1; cp < line + len && isspace(*cp); cp++) - ; - if (line + len <= cp) - goto person_only; - split->date_begin = cp; - span = strspn(cp, "0123456789"); - if (!span) - goto person_only; - split->date_end = split->date_begin + span; - for (cp = split->date_end; cp < line + len && isspace(*cp); cp++) - ; - if (line + len <= cp || (*cp != '+' && *cp != '-')) - goto person_only; - split->tz_begin = cp; - span = strspn(cp + 1, "0123456789"); - if (!span) - goto person_only; - split->tz_end = split->tz_begin + 1 + span; - return 0; - -person_only: - split->date_begin = NULL; - split->date_end = NULL; - split->tz_begin = NULL; - split->tz_end = NULL; - return 0; -} - -static const char *env_hint = -N_("\n" - "*** Please tell me who you are.\n" - "\n" - "Run\n" - "\n" - " git config --global user.email \"you@example.com\"\n" - " git config --global user.name \"Your Name\"\n" - "\n" - "to set your account\'s default identity.\n" - "Omit --global to set the identity only in this repository.\n" - "\n"); - -const char *fmt_ident(const char *name, const char *email, - enum want_ident whose_ident, const char *date_str, int flag) -{ - static struct strbuf ident = STRBUF_INIT; - int strict = (flag & IDENT_STRICT); - int want_date = !(flag & IDENT_NO_DATE); - int want_name = !(flag & IDENT_NO_NAME); - - if (!email) { - if (whose_ident == WANT_AUTHOR_IDENT && git_author_email.len) - email = git_author_email.buf; - else if (whose_ident == WANT_COMMITTER_IDENT && git_committer_email.len) - email = git_committer_email.buf; - } - if (!email) { - if (strict && ident_use_config_only - && !(ident_config_given & IDENT_MAIL_GIVEN)) { - fputs(_(env_hint), stderr); - die(_("no email was given and auto-detection is disabled")); - } - email = ident_default_email(); - if (strict && default_email_is_bogus) { - fputs(_(env_hint), stderr); - die(_("unable to auto-detect email address (got '%s')"), email); - } - } - - if (want_name) { - int using_default = 0; - if (!name) { - if (whose_ident == WANT_AUTHOR_IDENT && git_author_name.len) - name = git_author_name.buf; - else if (whose_ident == WANT_COMMITTER_IDENT && - git_committer_name.len) - name = git_committer_name.buf; - } - if (!name) { - if (strict && ident_use_config_only - && !(ident_config_given & IDENT_NAME_GIVEN)) { - fputs(_(env_hint), stderr); - die(_("no name was given and auto-detection is disabled")); - } - name = ident_default_name(); - using_default = 1; - if (strict && default_name_is_bogus) { - fputs(_(env_hint), stderr); - die(_("unable to auto-detect name (got '%s')"), name); - } - } - if (!*name) { - struct passwd *pw; - if (strict) { - if (using_default) - fputs(_(env_hint), stderr); - die(_("empty ident name (for <%s>) not allowed"), email); - } - pw = xgetpwuid_self(NULL); - name = pw->pw_name; - } - if (strict && !has_non_crud(name)) - die(_("name consists only of disallowed characters: %s"), name); - } - - strbuf_reset(&ident); - if (want_name) { - strbuf_addstr_without_crud(&ident, name); - strbuf_addstr(&ident, " <"); - } - strbuf_addstr_without_crud(&ident, email); - if (want_name) - strbuf_addch(&ident, '>'); - if (want_date) { - strbuf_addch(&ident, ' '); - if (date_str && date_str[0]) { - if (parse_date(date_str, &ident) < 0) - die(_("invalid date format: %s"), date_str); - } - else - strbuf_addstr(&ident, ident_default_date()); - } - - return ident.buf; -} - -const char *fmt_name(enum want_ident whose_ident) -{ - char *name = NULL; - char *email = NULL; - - switch (whose_ident) { - case WANT_BLANK_IDENT: - break; - case WANT_AUTHOR_IDENT: - name = getenv("GIT_AUTHOR_NAME"); - email = getenv("GIT_AUTHOR_EMAIL"); - break; - case WANT_COMMITTER_IDENT: - name = getenv("GIT_COMMITTER_NAME"); - email = getenv("GIT_COMMITTER_EMAIL"); - break; - } - return fmt_ident(name, email, whose_ident, NULL, - IDENT_STRICT | IDENT_NO_DATE); -} - -const char *git_author_info(int flag) -{ - if (getenv("GIT_AUTHOR_NAME")) - author_ident_explicitly_given |= IDENT_NAME_GIVEN; - if (getenv("GIT_AUTHOR_EMAIL")) - author_ident_explicitly_given |= IDENT_MAIL_GIVEN; - return fmt_ident(getenv("GIT_AUTHOR_NAME"), - getenv("GIT_AUTHOR_EMAIL"), - WANT_AUTHOR_IDENT, - getenv("GIT_AUTHOR_DATE"), - flag); -} - -const char *git_committer_info(int flag) -{ - if (getenv("GIT_COMMITTER_NAME")) - committer_ident_explicitly_given |= IDENT_NAME_GIVEN; - if (getenv("GIT_COMMITTER_EMAIL")) - committer_ident_explicitly_given |= IDENT_MAIL_GIVEN; - return fmt_ident(getenv("GIT_COMMITTER_NAME"), - getenv("GIT_COMMITTER_EMAIL"), - WANT_COMMITTER_IDENT, - getenv("GIT_COMMITTER_DATE"), - flag); -} - -static int ident_is_sufficient(int user_ident_explicitly_given) -{ -#ifndef WINDOWS - return (user_ident_explicitly_given & IDENT_MAIL_GIVEN); -#else - return (user_ident_explicitly_given == IDENT_ALL_GIVEN); -#endif -} - -int committer_ident_sufficiently_given(void) -{ - return ident_is_sufficient(committer_ident_explicitly_given); -} - -int author_ident_sufficiently_given(void) -{ - return ident_is_sufficient(author_ident_explicitly_given); -} - -static int set_ident(const char *var, const char *value) -{ - if (!strcmp(var, "author.name")) { - if (!value) - return config_error_nonbool(var); - strbuf_reset(&git_author_name); - strbuf_addstr(&git_author_name, value); - author_ident_explicitly_given |= IDENT_NAME_GIVEN; - ident_config_given |= IDENT_NAME_GIVEN; - return 0; - } - - if (!strcmp(var, "author.email")) { - if (!value) - return config_error_nonbool(var); - strbuf_reset(&git_author_email); - strbuf_addstr(&git_author_email, value); - author_ident_explicitly_given |= IDENT_MAIL_GIVEN; - ident_config_given |= IDENT_MAIL_GIVEN; - return 0; - } - - if (!strcmp(var, "committer.name")) { - if (!value) - return config_error_nonbool(var); - strbuf_reset(&git_committer_name); - strbuf_addstr(&git_committer_name, value); - committer_ident_explicitly_given |= IDENT_NAME_GIVEN; - ident_config_given |= IDENT_NAME_GIVEN; - return 0; - } - - if (!strcmp(var, "committer.email")) { - if (!value) - return config_error_nonbool(var); - strbuf_reset(&git_committer_email); - strbuf_addstr(&git_committer_email, value); - committer_ident_explicitly_given |= IDENT_MAIL_GIVEN; - ident_config_given |= IDENT_MAIL_GIVEN; - return 0; - } - - if (!strcmp(var, "user.name")) { - if (!value) - return config_error_nonbool(var); - strbuf_reset(&git_default_name); - strbuf_addstr(&git_default_name, value); - committer_ident_explicitly_given |= IDENT_NAME_GIVEN; - author_ident_explicitly_given |= IDENT_NAME_GIVEN; - ident_config_given |= IDENT_NAME_GIVEN; - return 0; - } - - if (!strcmp(var, "user.email")) { - if (!value) - return config_error_nonbool(var); - strbuf_reset(&git_default_email); - strbuf_addstr(&git_default_email, value); - committer_ident_explicitly_given |= IDENT_MAIL_GIVEN; - author_ident_explicitly_given |= IDENT_MAIL_GIVEN; - ident_config_given |= IDENT_MAIL_GIVEN; - return 0; - } - - return 0; -} - -int git_ident_config(const char *var, const char *value, void *data) -{ - if (!strcmp(var, "user.useconfigonly")) { - ident_use_config_only = git_config_bool(var, value); - return 0; - } - - return set_ident(var, value); -} - -static void set_env_if(const char *key, const char *value, int *given, int bit) -{ - if ((*given & bit) || getenv(key)) - return; /* nothing to do */ - setenv(key, value, 0); - *given |= bit; -} - -void prepare_fallback_ident(const char *name, const char *email) -{ - set_env_if("GIT_AUTHOR_NAME", name, - &author_ident_explicitly_given, IDENT_NAME_GIVEN); - set_env_if("GIT_AUTHOR_EMAIL", email, - &author_ident_explicitly_given, IDENT_MAIL_GIVEN); - set_env_if("GIT_COMMITTER_NAME", name, - &committer_ident_explicitly_given, IDENT_NAME_GIVEN); - set_env_if("GIT_COMMITTER_EMAIL", email, - &committer_ident_explicitly_given, IDENT_MAIL_GIVEN); -} - -static int buf_cmp(const char *a_begin, const char *a_end, - const char *b_begin, const char *b_end) -{ - int a_len = a_end - a_begin; - int b_len = b_end - b_begin; - int min = a_len < b_len ? a_len : b_len; - 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); -} |