*/
#include "cache.h"
+static struct strbuf git_default_name = STRBUF_INIT;
+static struct strbuf git_default_email = STRBUF_INIT;
static char git_default_date[50];
+int user_ident_explicitly_given;
-static void copy_gecos(const struct passwd *w, char *name, size_t sz)
-{
- char *src, *dst;
- size_t len, nlen;
+#ifdef NO_GECOS_IN_PWENT
+#define get_gecos(ignored) "&"
+#else
+#define get_gecos(struct_passwd) ((struct_passwd)->pw_gecos)
+#endif
- nlen = strlen(w->pw_name);
+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 (len = 0, dst = name, src = w->pw_gecos; len < sz; src++) {
+ for (src = get_gecos(w); *src && *src != ','; src++) {
int ch = *src;
- if (ch != '&') {
- *dst++ = ch;
- if (ch == 0 || ch == ',')
- break;
- len++;
- continue;
- }
- if (len + nlen < sz) {
+ if (ch != '&')
+ strbuf_addch(name, ch);
+ else {
/* Sorry, Mr. McDonald... */
- *dst++ = toupper(*w->pw_name);
- memcpy(dst, w->pw_name + 1, nlen - 1);
- dst += nlen - 1;
+ strbuf_addch(name, toupper(*w->pw_name));
+ strbuf_addstr(name, w->pw_name + 1);
}
}
- if (len < sz)
- name[len] = 0;
- else
- die("Your parents must have hated you!");
+}
+
+static int add_mailname_host(struct strbuf *buf)
+{
+ FILE *mailname;
+
+ mailname = fopen("/etc/mailname", "r");
+ if (!mailname) {
+ if (errno != ENOENT)
+ warning("cannot open /etc/mailname: %s",
+ strerror(errno));
+ return -1;
+ }
+ if (strbuf_getline(buf, mailname, '\n') == EOF) {
+ if (ferror(mailname))
+ warning("cannot read /etc/mailname: %s",
+ strerror(errno));
+ fclose(mailname);
+ return -1;
+ }
+ /* success! */
+ fclose(mailname);
+ return 0;
+}
+
+static void add_domainname(struct strbuf *out)
+{
+ char buf[1024];
+ struct hostent *he;
+ if (gethostname(buf, sizeof(buf))) {
+ warning("cannot get host name: %s", strerror(errno));
+ strbuf_addstr(out, "(none)");
+ return;
+ }
+ if (strchr(buf, '.'))
+ strbuf_addstr(out, buf);
+ else if ((he = gethostbyname(buf)) && strchr(he->h_name, '.'))
+ strbuf_addstr(out, he->h_name);
+ else
+ strbuf_addf(out, "%s.(none)", buf);
}
-static void copy_email(const struct passwd *pw)
+static void copy_email(const struct passwd *pw, struct strbuf *email)
{
/*
* Make up a fake email address
* (name + '@' + hostname [+ '.' + domainname])
*/
- size_t len = strlen(pw->pw_name);
- if (len > sizeof(git_default_email)/2)
- die("Your sysadmin must hate you!");
- memcpy(git_default_email, pw->pw_name, len);
- git_default_email[len++] = '@';
- gethostname(git_default_email + len, sizeof(git_default_email) - len);
- if (!strchr(git_default_email+len, '.')) {
- struct hostent *he = gethostbyname(git_default_email + len);
- char *domainname;
-
- len = strlen(git_default_email);
- git_default_email[len++] = '.';
- if (he && (domainname = strchr(he->h_name, '.')))
- strlcpy(git_default_email + len, domainname + 1,
- sizeof(git_default_email) - len);
- else
- strlcpy(git_default_email + len, "(none)",
- sizeof(git_default_email) - len);
- }
+ strbuf_addstr(email, pw->pw_name);
+ strbuf_addch(email, '@');
+
+ if (!add_mailname_host(email))
+ return; /* read from "/etc/mailname" (Debian) */
+ add_domainname(email);
}
-static void setup_ident(void)
+const char *ident_default_name(void)
{
- struct passwd *pw = NULL;
-
- /* Get the name ("gecos") */
- if (!git_default_name[0]) {
- pw = getpwuid(getuid());
- if (!pw)
- die("You don't exist. Go away!");
- copy_gecos(pw, git_default_name, sizeof(git_default_name));
+ if (!git_default_name.len) {
+ copy_gecos(xgetpwuid_self(), &git_default_name);
+ strbuf_trim(&git_default_name);
}
+ return git_default_name.buf;
+}
- if (!git_default_email[0]) {
+const char *ident_default_email(void)
+{
+ if (!git_default_email.len) {
const char *email = getenv("EMAIL");
if (email && email[0]) {
- strlcpy(git_default_email, email,
- sizeof(git_default_email));
+ strbuf_addstr(&git_default_email, email);
user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
- } else {
- if (!pw)
- pw = getpwuid(getuid());
- if (!pw)
- die("You don't exist. Go away!");
- copy_email(pw);
- }
+ } else
+ copy_email(xgetpwuid_self(), &git_default_email);
+ strbuf_trim(&git_default_email);
}
-
- /* And set the default date */
- if (!git_default_date[0])
- datestamp(git_default_date, sizeof(git_default_date));
+ return git_default_email.buf;
}
-static int add_raw(char *buf, size_t size, int offset, const char *str)
+const char *ident_default_date(void)
{
- size_t len = strlen(str);
- if (offset + len > size)
- return size;
- memcpy(buf + offset, str, len);
- return offset + len;
+ if (!git_default_date[0])
+ datestamp(git_default_date, sizeof(git_default_date));
+ return git_default_date;
}
static int crud(unsigned char c)
* Copy over a string to the destination, but avoid special
* characters ('\n', '<' and '>') and remove crud at the end
*/
-static int copy(char *buf, size_t size, int offset, const char *src)
+static void strbuf_addstr_without_crud(struct strbuf *sb, const char *src)
{
size_t i, len;
unsigned char c;
/*
* Copy the rest to the buffer, but avoid the special
* characters '\n' '<' and '>' that act as delimiters on
- * an identification line
+ * 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;
}
- if (offset >= size)
- return size;
- buf[offset++] = c;
+ sb->buf[sb->len++] = c;
}
- return offset;
+ 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)
+ return status;
+
+ for (cp = split->mail_begin; cp < line + len; cp++)
+ if (*cp == '>') {
+ split->mail_end = cp;
+ break;
+ }
+ if (!split->mail_end)
+ return status;
+
+ for (cp = split->mail_end + 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 =
const char *fmt_ident(const char *name, const char *email,
const char *date_str, int flag)
{
- static char buffer[1000];
+ static struct strbuf ident = STRBUF_INIT;
char date[50];
- int i;
- int error_on_no_name = (flag & IDENT_ERROR_ON_NO_NAME);
- int warn_on_no_name = (flag & IDENT_WARN_ON_NO_NAME);
- int name_addr_only = (flag & IDENT_NO_DATE);
-
- setup_ident();
- if (!name)
- name = git_default_name;
+ int strict = (flag & IDENT_STRICT);
+ int want_date = !(flag & IDENT_NO_DATE);
+ int want_name = !(flag & IDENT_NO_NAME);
+
+ if (want_name && !name)
+ name = ident_default_name();
if (!email)
- email = git_default_email;
+ email = ident_default_email();
- if (!*name) {
+ if (want_name && !*name) {
struct passwd *pw;
- if ((warn_on_no_name || error_on_no_name) &&
- name == git_default_name && env_hint) {
- fputs(env_hint, stderr);
- env_hint = NULL; /* warn only once */
+ if (strict) {
+ if (name == git_default_name.buf)
+ fputs(env_hint, stderr);
+ die("empty ident name (for <%s>) not allowed", email);
}
- if (error_on_no_name)
- die("empty ident %s <%s> not allowed", name, email);
- pw = getpwuid(getuid());
- if (!pw)
- die("You don't exist. Go away!");
- strlcpy(git_default_name, pw->pw_name,
- sizeof(git_default_name));
- name = git_default_name;
+ pw = xgetpwuid_self();
+ name = pw->pw_name;
}
- strcpy(date, git_default_date);
- if (!name_addr_only && date_str)
- parse_date(date_str, date, sizeof(date));
-
- i = copy(buffer, sizeof(buffer), 0, name);
- i = add_raw(buffer, sizeof(buffer), i, " <");
- i = copy(buffer, sizeof(buffer), i, email);
- if (!name_addr_only) {
- i = add_raw(buffer, sizeof(buffer), i, "> ");
- i = copy(buffer, sizeof(buffer), i, date);
- } else {
- i = add_raw(buffer, sizeof(buffer), i, ">");
+ if (strict && email == git_default_email.buf &&
+ strstr(email, "(none)")) {
+ fputs(env_hint, stderr);
+ die("unable to auto-detect email address (got '%s')", email);
}
- if (i >= sizeof(buffer))
- die("Impossibly long personal identifier");
- buffer[i] = 0;
- return buffer;
+
+ if (want_date) {
+ if (date_str && date_str[0]) {
+ if (parse_date(date_str, date, sizeof(date)) < 0)
+ die("invalid date format: %s", date_str);
+ }
+ else
+ strcpy(date, ident_default_date());
+ }
+
+ 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, ' ');
+ strbuf_addstr_without_crud(&ident, date);
+ }
+ return ident.buf;
}
const char *fmt_name(const char *name, const char *email)
{
- return fmt_ident(name, email, NULL, IDENT_ERROR_ON_NO_NAME | IDENT_NO_DATE);
+ return fmt_ident(name, email, NULL, IDENT_STRICT | IDENT_NO_DATE);
}
const char *git_author_info(int flag)
return (user_ident_explicitly_given == IDENT_ALL_GIVEN);
#endif
}
+
+int git_ident_config(const char *var, const char *value, void *data)
+{
+ if (!strcmp(var, "user.name")) {
+ if (!value)
+ return config_error_nonbool(var);
+ strbuf_reset(&git_default_name);
+ strbuf_addstr(&git_default_name, value);
+ user_ident_explicitly_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);
+ user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
+ return 0;
+ }
+
+ return 0;
+}