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update of config file parser from Vladimir

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This commit is contained in:
Denis Vlasenko
2008-07-16 22:12:18 +00:00
parent 38e54f1c13
commit c01340fe26
4 changed files with 52 additions and 177 deletions
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83
miscutils/crond.c
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@ -304,7 +304,7 @@ static const char MonAry[] ALIGN1 =
/* "Jan""Feb""Mar""Apr""May""Jun""Jul""Aug""Sep""Oct""Nov""Dec" */
;
static char *ParseField(char *user, char *ary, int modvalue, int off,
static void ParseField(char *user, char *ary, int modvalue, int off,
const char *names, char *ptr)
/* 'names' is a pointer to a set of 3-char abbreviations */
{
@ -312,11 +312,11 @@ static char *ParseField(char *user, char *ary, int modvalue, int off,
int n1 = -1;
int n2 = -1;
if (base == NULL) {
return NULL;
}
// this can't happen due to config_read()
/*if (base == NULL)
return;*/
while (!isspace(*ptr)) {
while (1) {
int skip = 0;
/* Handle numeric digit or symbol or '*' */
@ -352,8 +352,7 @@ static char *ParseField(char *user, char *ary, int modvalue, int off,
/* handle optional range '-' */
if (skip == 0) {
crondlog(WARN9 "user %s: parse error at %s", user, base);
return NULL;
goto err;
}
if (*ptr == '-' && n2 < 0) {
++ptr;
@ -388,8 +387,7 @@ static char *ParseField(char *user, char *ary, int modvalue, int off,
s0 = skip;
}
if (--failsafe == 0) {
crondlog(WARN9 "user %s: parse error at %s", user, base);
return NULL;
goto err;
}
} while (n1 != n2);
@ -402,9 +400,10 @@ static char *ParseField(char *user, char *ary, int modvalue, int off,
n2 = -1;
}
if (!isspace(*ptr)) {
if (*ptr) {
err:
crondlog(WARN9 "user %s: parse error at %s", user, base);
return NULL;
return;
}
if (DebugOpt && (LogLevel <= 5)) { /* like LVL5 */
@ -414,7 +413,6 @@ static char *ParseField(char *user, char *ary, int modvalue, int off,
fprintf(stderr, "%d", (unsigned char)ary[i]);
fputc('\n', stderr);
}
return skip_whitespace(ptr);
}
static void FixDayDow(CronLine *line)
@ -445,11 +443,10 @@ static void FixDayDow(CronLine *line)
static void SynchronizeFile(const char *fileName)
{
FILE *fi;
struct parser_t parser;
struct stat sbuf;
int maxEntries;
int maxLines;
char buf[1024];
char *tokens[6];
#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
char *mailTo = NULL;
#endif
@ -458,57 +455,44 @@ static void SynchronizeFile(const char *fileName)
return;
DeleteFile(fileName);
fi = fopen(fileName, "r");
if (!fi)
if (!config_open(&parser, fileName))
return;
maxEntries = MAXLINES;
if (strcmp(fileName, "root") == 0) {
maxEntries = 65535;
}
maxLines = maxEntries * 10;
maxLines = (strcmp(fileName, "root") == 0) ? 65535 : MAXLINES;
if (fstat(fileno(fi), &sbuf) == 0 && sbuf.st_uid == DaemonUid) {
if (fstat(fileno(parser.fp), &sbuf) == 0 && sbuf.st_uid == DaemonUid) {
CronFile *file = xzalloc(sizeof(CronFile));
CronLine **pline;
int n;
file->cf_User = xstrdup(fileName);
pline = &file->cf_LineBase;
while (fgets(buf, sizeof(buf), fi) != NULL && --maxLines) {
while (--maxLines && (n=config_read(&parser, tokens, 6, 0, " \t", '#')) > 0) {
CronLine *line;
char *ptr;
trim(buf);
if (buf[0] == '\0' || buf[0] == '#') {
continue;
}
if (--maxEntries == 0) {
break;
}
if (DebugOpt) {
crondlog(LVL5 "user:%s entry:%s", fileName, buf);
crondlog(LVL5 "user:%s entry:%s", fileName, parser.data);
}
/* check if line is setting MAILTO= */
if (0 == strncmp("MAILTO=", buf, 7)) {
if (0 == strncmp(tokens[0], "MAILTO=", 7)) {
#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
free(mailTo);
mailTo = (buf[7]) ? xstrdup(buf+7) : NULL;
mailTo = (tokens[0][7]) ? xstrdup(&tokens[0][7]) : NULL;
#endif /* otherwise just ignore such lines */
continue;
}
/* check if a minimum of tokens is specified */
if (n < 5)
continue;
*pline = line = xzalloc(sizeof(CronLine));
/* parse date ranges */
ptr = ParseField(file->cf_User, line->cl_Mins, 60, 0, NULL, buf);
ptr = ParseField(file->cf_User, line->cl_Hrs, 24, 0, NULL, ptr);
ptr = ParseField(file->cf_User, line->cl_Days, 32, 0, NULL, ptr);
ptr = ParseField(file->cf_User, line->cl_Mons, 12, -1, MonAry, ptr);
ptr = ParseField(file->cf_User, line->cl_Dow, 7, 0, DowAry, ptr);
/* check failure */
if (ptr == NULL) {
free(line);
continue;
}
ParseField(file->cf_User, line->cl_Mins, 60, 0, NULL, tokens[0]);
ParseField(file->cf_User, line->cl_Hrs, 24, 0, NULL, tokens[1]);
ParseField(file->cf_User, line->cl_Days, 32, 0, NULL, tokens[2]);
ParseField(file->cf_User, line->cl_Mons, 12, -1, MonAry, tokens[3]);
ParseField(file->cf_User, line->cl_Dow, 7, 0, DowAry, tokens[4]);
/*
* fix days and dow - if one is not "*" and the other
* is "*", the other is set to 0, and vise-versa
@ -519,22 +503,23 @@ static void SynchronizeFile(const char *fileName)
line->cl_MailTo = xstrdup(mailTo);
#endif
/* copy command */
line->cl_Shell = xstrdup(ptr);
line->cl_Shell = xstrdup(tokens[5]);
if (DebugOpt) {
crondlog(LVL5 " command:%s", ptr);
crondlog(LVL5 " command:%s", tokens[5]);
}
pline = &line->cl_Next;
//bb_error_msg("M[%s]F[%s][%s][%s][%s][%s][%s]", mailTo, tokens[0], tokens[1], tokens[2], tokens[3], tokens[4], tokens[5]);
}
*pline = NULL;
file->cf_Next = FileBase;
FileBase = file;
if (maxLines == 0 || maxEntries == 0) {
if (maxLines == 0) {
crondlog(WARN9 "user %s: too many lines", fileName);
}
}
fclose(fi);
config_close(&parser);
}
static void CheckUpdates(void)