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config: error out on malformed env/hint lines

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We need these to be assignments, error out if they're not.

While we're here, tag errout as __printflike so that the compiler will
sanity check the format string + args.

CID:	1505293
Reviewed by:	emaste, imp
Differential Revision:	https://reviews.freebsd.org/D38642
This commit is contained in:
Kyle Evans 2023-02-16 14:36:17 -06:00
parent b2c5a01722
commit da88842029
1 changed files with 18 additions and 7 deletions
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25
usr.sbin/config/mkmakefile.cc
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@ -69,10 +69,11 @@ static void read_files(void);
static void sanitize_envline(char *result, const char *src);
static bool preprocess(char *line, char *result);
static void process_into_file(char *line, FILE *ofp);
static void process_into_map(char *line, env_map &emap);
static int process_into_map(char *line, env_map &emap);
static void dump_map(env_map &emap, FILE *ofp);
static void errout(const char *fmt, ...)
static void __printflike(1, 2)
errout(const char *fmt, ...)
{
va_list ap;
@ -269,16 +270,20 @@ process_into_file(char *line, FILE *ofp)
fprintf(ofp, "\"%s\\0\"\n", result);
}
static void
static int
process_into_map(char *line, env_map &emap)
{
char result[BUFSIZ], *s;
if (preprocess(line, result)) {
s = strchr(result, '=');
if (s == NULL)
return (EINVAL);
*s = '\0';
emap[result] = s + 1;
}
return (0);
}
static void
@ -320,8 +325,11 @@ makehints(void)
ifp = fopen(hint->hint_name, "r");
if (ifp == NULL)
err(1, "%s", hint->hint_name);
while (fgets(line, BUFSIZ, ifp) != NULL)
process_into_map(line, emap);
while (fgets(line, BUFSIZ, ifp) != NULL) {
if (process_into_map(line, emap) != 0)
errout("%s: malformed line: %s\n",
hint->hint_name, line);
}
dump_map(emap, ofp);
fclose(ifp);
}
@ -360,8 +368,11 @@ makeenv(void)
ifp = fopen(envvar->env_str, "r");
if (ifp == NULL)
err(1, "%s", envvar->env_str);
while (fgets(line, BUFSIZ, ifp) != NULL)
process_into_map(line, emap);
while (fgets(line, BUFSIZ, ifp) != NULL) {
if (process_into_map(line, emap) != 0)
errout("%s: malformed line: %s\n",
envvar->env_str, line);
}
dump_map(emap, ofp);
fclose(ifp);
} else