[thirdparty/git.git] / ident.c

/*
 * ident.c
 *
 * create git identifier lines of the form "name <email> date"
 *
 * Copyright (C) 2005 Linus Torvalds
 */
#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];

#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;

#ifdef NO_GECOS_IN_PWENT
#define get_gecos(ignored) "&"
#else
#define get_gecos(struct_passwd) ((struct_passwd)->pw_gecos)
#endif

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;

	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, struct strbuf *email)
{
	/*
	 * 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);
}

static const char *ident_default_name(void)
{
	if (!git_default_name.len) {
		copy_gecos(xgetpwuid_self(), &git_default_name);
		strbuf_trim(&git_default_name);
	}
	return git_default_name.buf;
}

const char *ident_default_email(void)
{
	if (!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
			copy_email(xgetpwuid_self(), &git_default_email);
		strbuf_trim(&git_default_email);
	}
	return git_default_email.buf;
}

static const char *ident_default_date(void)
{
	if (!git_default_date[0])
		datestamp(git_default_date, sizeof(git_default_date));
	return git_default_date;
}

static int crud(unsigned char c)
{
	return  c <= 32  ||
		c == '.' ||
		c == ',' ||
		c == ':' ||
		c == ';' ||
		c == '<' ||
		c == '>' ||
		c == '"' ||
		c == '\\' ||
		c == '\'';
}

/*
 * 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;

	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 =
"\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,
		      const char *date_str, int flag)
{
	static struct strbuf ident = STRBUF_INIT;
	char date[50];
	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 = ident_default_email();

	if (want_name && !*name) {
		struct passwd *pw;

		if (strict) {
			if (name == git_default_name.buf)
				fputs(env_hint, stderr);
			die("empty ident name (for <%s>) not allowed", email);
		}
		pw = xgetpwuid_self();
		name = pw->pw_name;
	}

	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 (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_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"),
			 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"),
			 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);
}

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);
		committer_ident_explicitly_given |= IDENT_NAME_GIVEN;
		author_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);
		committer_ident_explicitly_given |= IDENT_MAIL_GIVEN;
		author_ident_explicitly_given |= IDENT_MAIL_GIVEN;
		return 0;
	}

	return 0;
}
Commit	Line	Data
6aa33f40 LT	1	/*
	2	* ident.c
	3	*
	4	* create git identifier lines of the form "name <email> date"
	5	*
	6	* Copyright (C) 2005 Linus Torvalds
	7	*/
	8	#include "cache.h"
	9
8587ead7 JK	10	static struct strbuf git_default_name = STRBUF_INIT;
8587ead7 JK	11	static struct strbuf git_default_email = STRBUF_INIT;
e1b10391	12	static char git_default_date[50];
45280230 JK	13
	14	#define IDENT_NAME_GIVEN 01
	15	#define IDENT_MAIL_GIVEN 02
	16	#define IDENT_ALL_GIVEN (IDENT_NAME_GIVEN\|IDENT_MAIL_GIVEN)
d6991cee JK	17	static int committer_ident_explicitly_given;
d6991cee JK	18	static int author_ident_explicitly_given;
6aa33f40	19
590e081d RG	20	#ifdef NO_GECOS_IN_PWENT
	21	#define get_gecos(ignored) "&"
	22	#else
	23	#define get_gecos(struct_passwd) ((struct_passwd)->pw_gecos)
	24	#endif
	25
8587ead7	26	static void copy_gecos(const struct passwd w, struct strbuf name)
e9bacb4f	27	{
8587ead7	28	char *src;
e9bacb4f JH	29
	30	/* Traditionally GECOS field had office phone numbers etc, separated
	31	* with commas. Also & stands for capitalized form of the login name.
	32	*/
	33
8587ead7	34	for (src = get_gecos(w); src && src != ','; src++) {
e9bacb4f	35	int ch = *src;
8587ead7 JK	36	if (ch != '&')
	37	strbuf_addch(name, ch);
	38	else {
e9bacb4f	39	/* Sorry, Mr. McDonald... */
8587ead7 JK	40	strbuf_addch(name, toupper(*w->pw_name));
8587ead7 JK	41	strbuf_addstr(name, w->pw_name + 1);
e9bacb4f JH	42	}
e9bacb4f JH	43	}
e9bacb4f JH	44	}
e9bacb4f JH	45
8587ead7	46	static int add_mailname_host(struct strbuf *buf)
8a55caa8 JN	47	{
	48	FILE *mailname;
	49
	50	mailname = fopen("/etc/mailname", "r");
	51	if (!mailname) {
	52	if (errno != ENOENT)
	53	warning("cannot open /etc/mailname: %s",
	54	strerror(errno));
	55	return -1;
	56	}
8587ead7	57	if (strbuf_getline(buf, mailname, '\n') == EOF) {
8a55caa8 JN	58	if (ferror(mailname))
	59	warning("cannot read /etc/mailname: %s",
	60	strerror(errno));
	61	fclose(mailname);
	62	return -1;
	63	}
	64	/* success! */
	65	fclose(mailname);
	66	return 0;
	67	}
	68
8587ead7	69	static void add_domainname(struct strbuf *out)
8a55caa8	70	{
8587ead7	71	char buf[1024];
8a55caa8	72	struct hostent *he;
8a55caa8	73
8587ead7	74	if (gethostname(buf, sizeof(buf))) {
8a55caa8	75	warning("cannot get host name: %s", strerror(errno));
8587ead7	76	strbuf_addstr(out, "(none)");
8a55caa8 JN	77	return;
8a55caa8 JN	78	}
8587ead7	79	if (strchr(buf, '.'))
f8254d32 JK	80	strbuf_addstr(out, buf);
	81	else if ((he = gethostbyname(buf)) && strchr(he->h_name, '.'))
	82	strbuf_addstr(out, he->h_name);
8a55caa8	83	else
f8254d32	84	strbuf_addf(out, "%s.(none)", buf);
8a55caa8 JN	85	}
8a55caa8 JN	86
8587ead7	87	static void copy_email(const struct passwd pw, struct strbuf email)
6aa33f40	88	{
01754769 JH	89	/*
	90	* Make up a fake email address
	91	* (name + '@' + hostname [+ '.' + domainname])
	92	*/
8587ead7 JK	93	strbuf_addstr(email, pw->pw_name);
	94	strbuf_addch(email, '@');
	95
	96	if (!add_mailname_host(email))
8a55caa8	97	return; /* read from "/etc/mailname" (Debian) */
8587ead7	98	add_domainname(email);
01754769 JH	99	}
01754769 JH	100
dad148c3	101	static const char *ident_default_name(void)
01754769	102	{
be641abd	103	if (!git_default_name.len) {
2f705875	104	copy_gecos(xgetpwuid_self(), &git_default_name);
be641abd	105	strbuf_trim(&git_default_name);
01754769	106	}
8587ead7	107	return git_default_name.buf;
bcb2b004	108	}
01754769	109
bcb2b004 JK	110	const char *ident_default_email(void)
bcb2b004 JK	111	{
8587ead7	112	if (!git_default_email.len) {
46f74f00 MK	113	const char *email = getenv("EMAIL");
46f74f00 MK	114
99178c83	115	if (email && email[0]) {
8587ead7	116	strbuf_addstr(&git_default_email, email);
d6991cee JK	117	committer_ident_explicitly_given \|= IDENT_MAIL_GIVEN;
d6991cee JK	118	author_ident_explicitly_given \|= IDENT_MAIL_GIVEN;
2f705875 JK	119	} else
2f705875 JK	120	copy_email(xgetpwuid_self(), &git_default_email);
be641abd	121	strbuf_trim(&git_default_email);
01754769	122	}
8587ead7	123	return git_default_email.buf;
6aa33f40 LT	124	}
6aa33f40 LT	125
dad148c3	126	static const char *ident_default_date(void)
6aa33f40	127	{
01754769 JH	128	if (!git_default_date[0])
01754769 JH	129	datestamp(git_default_date, sizeof(git_default_date));
bcb2b004	130	return git_default_date;
6aa33f40 LT	131	}
	132
	133	static int crud(unsigned char c)
	134	{
f64c81d4 AR	135	return c <= 32 \|\|
	136	c == '.' \|\|
	137	c == ',' \|\|
	138	c == ':' \|\|
	139	c == ';' \|\|
	140	c == '<' \|\|
	141	c == '>' \|\|
	142	c == '"' \|\|
d404bf02	143	c == '\\' \|\|
f64c81d4	144	c == '\'';
6aa33f40 LT	145	}
	146
	147	/*
	148	* Copy over a string to the destination, but avoid special
	149	* characters ('\n', '<' and '>') and remove crud at the end
	150	*/
c96f0c8d	151	static void strbuf_addstr_without_crud(struct strbuf sb, const char src)
6aa33f40	152	{
b0732115	153	size_t i, len;
6aa33f40 LT	154	unsigned char c;
	155
	156	/* Remove crud from the beginning.. */
	157	while ((c = *src) != 0) {
	158	if (!crud(c))
	159	break;
	160	src++;
	161	}
	162
	163	/* Remove crud from the end.. */
	164	len = strlen(src);
	165	while (len > 0) {
	166	c = src[len-1];
	167	if (!crud(c))
	168	break;
	169	--len;
	170	}
	171
	172	/*
	173	* Copy the rest to the buffer, but avoid the special
82f9d58a	174	* characters '\n' '<' and '>' that act as delimiters on
c96f0c8d JK	175	* an identification line. We can only remove crud, never add it,
c96f0c8d JK	176	* so 'len' is our maximum.
6aa33f40	177	*/
c96f0c8d	178	strbuf_grow(sb, len);
6aa33f40 LT	179	for (i = 0; i < len; i++) {
	180	c = *src++;
	181	switch (c) {
	182	case '\n': case '<': case '>':
	183	continue;
	184	}
c96f0c8d	185	sb->buf[sb->len++] = c;
6aa33f40	186	}
c96f0c8d	187	sb->buf[sb->len] = '\0';
6aa33f40 LT	188	}
6aa33f40 LT	189
4b340cfa JH	190	/*
	191	* Reverse of fmt_ident(); given an ident line, split the fields
	192	* to allow the caller to parse it.
	193	* Signal a success by returning 0, but date/tz fields of the result
	194	* can still be NULL if the input line only has the name/email part
	195	* (e.g. reading from a reflog entry).
	196	*/
	197	int split_ident_line(struct ident_split split, const char line, int len)
	198	{
	199	const char *cp;
	200	size_t span;
	201	int status = -1;
	202
	203	memset(split, 0, sizeof(*split));
	204
	205	split->name_begin = line;
	206	for (cp = line; *cp && cp < line + len; cp++)
	207	if (*cp == '<') {
	208	split->mail_begin = cp + 1;
	209	break;
	210	}
	211	if (!split->mail_begin)
	212	return status;
	213
d9955fd6	214	for (cp = split->mail_begin - 2; line <= cp; cp--)
4b340cfa JH	215	if (!isspace(*cp)) {
	216	split->name_end = cp + 1;
	217	break;
	218	}
e27ddb64 JH	219	if (!split->name_end) {
	220	/* no human readable name */
	221	split->name_end = split->name_begin;
	222	}
4b340cfa JH	223
	224	for (cp = split->mail_begin; cp < line + len; cp++)
	225	if (*cp == '>') {
	226	split->mail_end = cp;
	227	break;
	228	}
	229	if (!split->mail_end)
	230	return status;
	231
	232	for (cp = split->mail_end + 1; cp < line + len && isspace(*cp); cp++)
	233	;
	234	if (line + len <= cp)
	235	goto person_only;
	236	split->date_begin = cp;
	237	span = strspn(cp, "0123456789");
	238	if (!span)
	239	goto person_only;
	240	split->date_end = split->date_begin + span;
	241	for (cp = split->date_end; cp < line + len && isspace(*cp); cp++)
	242	;
	243	if (line + len <= cp \|\| (cp != '+' && cp != '-'))
	244	goto person_only;
	245	split->tz_begin = cp;
	246	span = strspn(cp + 1, "0123456789");
	247	if (!span)
	248	goto person_only;
	249	split->tz_end = split->tz_begin + 1 + span;
	250	return 0;
	251
	252	person_only:
	253	split->date_begin = NULL;
	254	split->date_end = NULL;
	255	split->tz_begin = NULL;
	256	split->tz_end = NULL;
	257	return 0;
	258	}
	259
749be728	260	static const char *env_hint =
d5cc2de9	261	"\n"
6c293d40	262	"*** Please tell me who you are.\n"
d5cc2de9 HWN	263	"\n"
	264	"Run\n"
	265	"\n"
8e7425da	266	" git config --global user.email \"you@example.com\"\n"
180787c4	267	" git config --global user.name \"Your Name\"\n"
d5cc2de9	268	"\n"
180787c4 SP	269	"to set your account\'s default identity.\n"
180787c4 SP	270	"Omit --global to set the identity only in this repository.\n"
d5cc2de9	271	"\n";
749be728	272
774751a8 JH	273	const char fmt_ident(const char name, const char *email,
774751a8 JH	274	const char *date_str, int flag)
6aa33f40	275	{
c96f0c8d	276	static struct strbuf ident = STRBUF_INIT;
6aa33f40	277	char date[50];
f9bc573f	278	int strict = (flag & IDENT_STRICT);
359b27ad	279	int want_date = !(flag & IDENT_NO_DATE);
c15e1987	280	int want_name = !(flag & IDENT_NO_NAME);
6aa33f40	281
c15e1987	282	if (want_name && !name)
bcb2b004 JK	283	name = ident_default_name();
	284	if (!email)
	285	email = ident_default_email();
dfdd309e	286
c15e1987	287	if (want_name && !*name) {
cb280e10 JH	288	struct passwd *pw;
cb280e10 JH	289
f9bc573f	290	if (strict) {
8587ead7	291	if (name == git_default_name.buf)
b9f0ac17	292	fputs(env_hint, stderr);
b00f6cfc	293	die("empty ident name (for <%s>) not allowed", email);
749be728	294	}
2f705875	295	pw = xgetpwuid_self();
060d4bb3	296	name = pw->pw_name;
749be728	297	}
dfdd309e	298
8c5b1ae1 JK	299	if (strict && email == git_default_email.buf &&
	300	strstr(email, "(none)")) {
	301	fputs(env_hint, stderr);
	302	die("unable to auto-detect email address (got '%s')", email);
749be728	303	}
dfdd309e	304
359b27ad JK	305	if (want_date) {
	306	if (date_str && date_str[0]) {
	307	if (parse_date(date_str, date, sizeof(date)) < 0)
	308	die("invalid date format: %s", date_str);
	309	}
	310	else
	311	strcpy(date, ident_default_date());
4579bb41	312	}
6aa33f40	313
c96f0c8d	314	strbuf_reset(&ident);
c15e1987 JK	315	if (want_name) {
	316	strbuf_addstr_without_crud(&ident, name);
	317	strbuf_addstr(&ident, " <");
d9ccfe77	318	}
c96f0c8d	319	strbuf_addstr_without_crud(&ident, email);
c15e1987 JK	320	if (want_name)
c15e1987 JK	321	strbuf_addch(&ident, '>');
359b27ad	322	if (want_date) {
c96f0c8d JK	323	strbuf_addch(&ident, ' ');
c96f0c8d JK	324	strbuf_addstr_without_crud(&ident, date);
d9ccfe77	325	}
c96f0c8d	326	return ident.buf;
6aa33f40	327	}
d289d136	328
d9ccfe77 JH	329	const char fmt_name(const char name, const char *email)
d9ccfe77 JH	330	{
f9bc573f	331	return fmt_ident(name, email, NULL, IDENT_STRICT \| IDENT_NO_DATE);
d9ccfe77 JH	332	}
d9ccfe77 JH	333
774751a8	334	const char *git_author_info(int flag)
d289d136	335	{
d6991cee JK	336	if (getenv("GIT_AUTHOR_NAME"))
	337	author_ident_explicitly_given \|= IDENT_NAME_GIVEN;
	338	if (getenv("GIT_AUTHOR_EMAIL"))
	339	author_ident_explicitly_given \|= IDENT_MAIL_GIVEN;
798123af	340	return fmt_ident(getenv("GIT_AUTHOR_NAME"),
c7d77dab	341	getenv("GIT_AUTHOR_EMAIL"),
749be728	342	getenv("GIT_AUTHOR_DATE"),
774751a8	343	flag);
d289d136 EB	344	}
d289d136 EB	345
774751a8	346	const char *git_committer_info(int flag)
d289d136	347	{
91c38a21	348	if (getenv("GIT_COMMITTER_NAME"))
d6991cee	349	committer_ident_explicitly_given \|= IDENT_NAME_GIVEN;
91c38a21	350	if (getenv("GIT_COMMITTER_EMAIL"))
d6991cee	351	committer_ident_explicitly_given \|= IDENT_MAIL_GIVEN;
798123af	352	return fmt_ident(getenv("GIT_COMMITTER_NAME"),
c7d77dab	353	getenv("GIT_COMMITTER_EMAIL"),
749be728	354	getenv("GIT_COMMITTER_DATE"),
774751a8	355	flag);
d289d136	356	}
5aeb3a3a	357
d6991cee	358	static int ident_is_sufficient(int user_ident_explicitly_given)
5aeb3a3a JH	359	{
	360	#ifndef WINDOWS
	361	return (user_ident_explicitly_given & IDENT_MAIL_GIVEN);
	362	#else
	363	return (user_ident_explicitly_given == IDENT_ALL_GIVEN);
	364	#endif
	365	}
9597921b	366
d6991cee JK	367	int committer_ident_sufficiently_given(void)
	368	{
	369	return ident_is_sufficient(committer_ident_explicitly_given);
	370	}
	371
	372	int author_ident_sufficiently_given(void)
	373	{
	374	return ident_is_sufficient(author_ident_explicitly_given);
	375	}
	376
9597921b JK	377	int git_ident_config(const char var, const char value, void *data)
	378	{
	379	if (!strcmp(var, "user.name")) {
	380	if (!value)
	381	return config_error_nonbool(var);
8587ead7 JK	382	strbuf_reset(&git_default_name);
8587ead7 JK	383	strbuf_addstr(&git_default_name, value);
d6991cee JK	384	committer_ident_explicitly_given \|= IDENT_NAME_GIVEN;
d6991cee JK	385	author_ident_explicitly_given \|= IDENT_NAME_GIVEN;
9597921b JK	386	return 0;
	387	}
	388
	389	if (!strcmp(var, "user.email")) {
	390	if (!value)
	391	return config_error_nonbool(var);
8587ead7 JK	392	strbuf_reset(&git_default_email);
8587ead7 JK	393	strbuf_addstr(&git_default_email, value);
d6991cee JK	394	committer_ident_explicitly_given \|= IDENT_MAIL_GIVEN;
d6991cee JK	395	author_ident_explicitly_given \|= IDENT_MAIL_GIVEN;
9597921b JK	396	return 0;
	397	}
	398
	399	return 0;
	400	}