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b00f6cfcd7
There's on point in printing the name, since it is by definition the empty string if we have reached this code path. Instead, let's be more clear that we are complaining about the empty name, but still show the email address that it is attached to (since that may provide some context to the user). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
364 lines
8.1 KiB
C
364 lines
8.1 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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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 char git_default_date[50];
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int user_ident_explicitly_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 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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mailname = fopen("/etc/mailname", "r");
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if (!mailname) {
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if (errno != ENOENT)
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warning("cannot open /etc/mailname: %s",
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strerror(errno));
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return -1;
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}
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if (strbuf_getline(buf, mailname, '\n') == EOF) {
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if (ferror(mailname))
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warning("cannot read /etc/mailname: %s",
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strerror(errno));
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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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fclose(mailname);
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return 0;
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}
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static void add_domainname(struct strbuf *out)
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{
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char buf[1024];
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struct hostent *he;
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if (gethostname(buf, sizeof(buf))) {
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warning("cannot get host name: %s", strerror(errno));
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strbuf_addstr(out, "(none)");
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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 ((he = gethostbyname(buf)) && strchr(he->h_name, '.'))
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strbuf_addstr(out, he->h_name);
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else
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strbuf_addf(out, "%s.(none)", buf);
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}
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static void copy_email(const struct passwd *pw, struct strbuf *email)
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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);
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}
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const char *ident_default_name(void)
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{
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if (!git_default_name.len) {
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copy_gecos(xgetpwuid_self(), &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 (!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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user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
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} else
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copy_email(xgetpwuid_self(), &git_default_email);
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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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const char *ident_default_date(void)
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{
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if (!git_default_date[0])
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datestamp(git_default_date, sizeof(git_default_date));
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return 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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/*
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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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return status;
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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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for (cp = split->mail_end + 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"
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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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char date[50];
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int error_on_no_name = (flag & IDENT_ERROR_ON_NO_NAME);
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int name_addr_only = (flag & IDENT_NO_DATE);
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if (!name)
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name = ident_default_name();
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if (!email)
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email = ident_default_email();
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if (!*name) {
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struct passwd *pw;
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if (error_on_no_name) {
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if (name == git_default_name.buf)
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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();
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name = pw->pw_name;
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}
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strcpy(date, ident_default_date());
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if (!name_addr_only && date_str && date_str[0]) {
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if (parse_date(date_str, date, sizeof(date)) < 0)
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die("invalid date format: %s", date_str);
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}
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strbuf_reset(&ident);
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strbuf_addstr_without_crud(&ident, name);
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strbuf_addstr(&ident, " <");
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strbuf_addstr_without_crud(&ident, email);
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strbuf_addch(&ident, '>');
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if (!name_addr_only) {
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strbuf_addch(&ident, ' ');
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strbuf_addstr_without_crud(&ident, 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_ERROR_ON_NO_NAME | 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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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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user_ident_explicitly_given |= IDENT_NAME_GIVEN;
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if (getenv("GIT_COMMITTER_EMAIL"))
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user_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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int user_ident_sufficiently_given(void)
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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 git_ident_config(const char *var, const char *value, void *data)
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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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user_ident_explicitly_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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user_ident_explicitly_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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