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/** \ingroup rpmbuild
* \file build/parseChangelog.c
* Parse %changelog section from spec file.
*/
#include "system.h"
#include <rpm/header.h>
#include <rpm/rpmbuild.h>
#include <rpm/rpmlog.h>
#include "debug.h"
#define SKIPSPACE(s) { while (*(s) && risspace(*(s))) (s)++; }
#define SKIPNONSPACE(s) { while (*(s) && !risspace(*(s))) (s)++; }
void addChangelogEntry(Header h, time_t time, const char *name, const char *text)
{
rpm_time_t mytime = time; /* XXX convert to header representation */
headerPutUint32(h, RPMTAG_CHANGELOGTIME, &mytime, 1);
headerPutString(h, RPMTAG_CHANGELOGNAME, name);
headerPutString(h, RPMTAG_CHANGELOGTEXT, text);
}
/**
* Parse date string to seconds.
* @param datestr date string (e.g. 'Wed Jan 1 1997')
* @retval secs secs since the unix epoch
* @return 0 on success, -1 on error
*/
static int dateToTimet(const char * datestr, time_t * secs)
{
int rc = -1; /* assume failure */
struct tm time;
const char * const * idx;
char *p, *pe, *q, *date, *tz;
static const char * const days[] =
{ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL };
static const char * const months[] =
{ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec", NULL };
static const char const lengths[] =
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
memset(&time, 0, sizeof(time));
date = xstrdup(datestr);
pe = date;
/* day of week */
p = pe; SKIPSPACE(p);
if (*p == '\0') goto exit;
pe = p; SKIPNONSPACE(pe); if (*pe != '\0') *pe++ = '\0';
for (idx = days; *idx && !rstreq(*idx, p); idx++)
{};
if (*idx == NULL) goto exit;
/* month */
p = pe; SKIPSPACE(p);
if (*p == '\0') goto exit;
pe = p; SKIPNONSPACE(pe); if (*pe != '\0') *pe++ = '\0';
for (idx = months; *idx && !rstreq(*idx, p); idx++)
{};
if (*idx == NULL) goto exit;
time.tm_mon = idx - months;
/* day */
p = pe; SKIPSPACE(p);
if (*p == '\0') goto exit;
pe = p; SKIPNONSPACE(pe); if (*pe != '\0') *pe++ = '\0';
/* make this noon so the day is always right (as we make this UTC) */
time.tm_hour = 12;
time.tm_mday = strtol(p, &q, 10);
if (!(q && *q == '\0')) goto exit;
if (time.tm_mday < 0 || time.tm_mday > lengths[time.tm_mon]) goto exit;
/* year */
p = pe; SKIPSPACE(p);
if (*p == '\0') goto exit;
pe = p; SKIPNONSPACE(pe); if (*pe != '\0') *pe++ = '\0';
time.tm_year = strtol(p, &q, 10);
if (!(q && *q == '\0')) goto exit;
if (time.tm_year < 1990 || time.tm_year >= 3000) goto exit;
time.tm_year -= 1900;
/* chnagelog date is always in UTC */
tz = getenv("TZ");
if (tz) tz = xstrdup(tz);
setenv("TZ", "UTC", 1);
*secs = mktime(&time);
unsetenv("TZ");
if (tz) {
setenv("TZ", tz, 1);
free(tz);
}
if (*secs == -1) goto exit;
rc = 0;
exit:
free(date);
return rc;
}
/**
* Add %changelog section to header.
* @param h header
* @param sb changelog strings
* @return RPMRC_OK on success
*/
static rpmRC addChangelog(Header h, StringBuf sb)
{
char *s;
int i;
time_t time;
time_t lastTime = 0;
time_t trimtime = rpmExpandNumeric("%{?_changelog_trimtime}");
char *date, *name, *text, *next;
s = getStringBuf(sb);
/* skip space */
SKIPSPACE(s);
while (*s != '\0') {
if (*s != '*') {
rpmlog(RPMLOG_ERR,
_("%%changelog entries must start with *\n"));
return RPMRC_FAIL;
}
/* find end of line */
date = s;
while(*s && *s != '\n') s++;
if (! *s) {
rpmlog(RPMLOG_ERR, _("incomplete %%changelog entry\n"));
return RPMRC_FAIL;
}
*s = '\0';
text = s + 1;
/* 4 fields of date */
date++;
s = date;
for (i = 0; i < 4; i++) {
SKIPSPACE(s);
SKIPNONSPACE(s);
}
SKIPSPACE(date);
if (dateToTimet(date, &time)) {
rpmlog(RPMLOG_ERR, _("bad date in %%changelog: %s\n"), date);
return RPMRC_FAIL;
}
if (lastTime && lastTime < time) {
rpmlog(RPMLOG_ERR,
_("%%changelog not in descending chronological order\n"));
return RPMRC_FAIL;
}
lastTime = time;
/* skip space to the name */
SKIPSPACE(s);
if (! *s) {
rpmlog(RPMLOG_ERR, _("missing name in %%changelog\n"));
return RPMRC_FAIL;
}
/* name */
name = s;
while (*s != '\0') s++;
while (s > name && risspace(*s)) {
*s-- = '\0';
}
if (s == name) {
rpmlog(RPMLOG_ERR, _("missing name in %%changelog\n"));
return RPMRC_FAIL;
}
/* text */
SKIPSPACE(text);
if (! *text) {
rpmlog(RPMLOG_ERR, _("no description in %%changelog\n"));
return RPMRC_FAIL;
}
/* find the next leading '*' (or eos) */
s = text;
do {
s++;
} while (*s && (*(s-1) != '\n' || *s != '*'));
next = s;
s--;
/* backup to end of description */
while ((s > text) && risspace(*s)) {
*s-- = '\0';
}
if ( !trimtime || time >= trimtime ) {
addChangelogEntry(h, time, name, text);
} else break;
s = next;
}
return RPMRC_OK;
}
int parseChangelog(rpmSpec spec)
{
int nextPart, rc, res = PART_ERROR;
StringBuf sb = newStringBuf();
/* There are no options to %changelog */
if ((rc = readLine(spec, STRIP_COMMENTS)) > 0) {
res = PART_NONE;
goto exit;
} else if (rc < 0) {
goto exit;
}
while (! (nextPart = isPart(spec->line))) {
appendStringBuf(sb, spec->line);
if ((rc = readLine(spec, STRIP_COMMENTS)) > 0) {
nextPart = PART_NONE;
break;
} else if (rc < 0) {
goto exit;
}
}
if (addChangelog(spec->packages->header, sb)) {
goto exit;
}
res = nextPart;
exit:
sb = freeStringBuf(sb);
return res;
}
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