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warn on deprecated env vars

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This commit is contained in:
van Hauser
2020-07-01 10:03:34 +02:00
parent 4ec29928bf
commit 97cef46b62
4 changed files with 205 additions and 61 deletions
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55
src/afl-fuzz-state.c
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@ -164,14 +164,14 @@ void afl_state_init(afl_state_t *afl, uint32_t map_size) {
void read_afl_environment(afl_state_t *afl, char **envp) {
int index = 0, found = 0;
int index = 0, issue_detected = 0;
char *env;
while ((env = envp[index++]) != NULL) {
if (strncmp(env, "ALF_", 4) == 0) {
WARNF("Potentially mistyped AFL environment variable: %s", env);
found++;
issue_detected = 1;
} else if (strncmp(env, "AFL_", 4) == 0) {
@ -307,15 +307,6 @@ void read_afl_environment(afl_state_t *afl, char **envp) {
afl->afl_env.afl_tmpdir =
(u8 *)get_afl_env(afl_environment_variables[i]);
} else if (!strncmp(env, "AFL_POST_LIBRARY",
afl_environment_variable_len)) {
FATAL(
"AFL_POST_LIBRARY is deprecated, use "
"AFL_CUSTOM_MUTATOR_LIBRARY instead, see "
"docs/custom_mutators.md");
} else if (!strncmp(env, "AFL_CUSTOM_MUTATOR_LIBRARY",
afl_environment_variable_len)) {
@ -352,10 +343,48 @@ void read_afl_environment(afl_state_t *afl, char **envp) {
}
i = 0;
while (match == 0 && afl_environment_variables[i] != NULL) {
if (strncmp(env, afl_environment_variables[i],
strlen(afl_environment_variables[i])) == 0 &&
env[strlen(afl_environment_variables[i])] == '=') {
match = 1;
} else {
i++;
}
}
i = 0;
while (match == 0 && afl_environment_deprecated[i] != NULL) {
if (strncmp(env, afl_environment_deprecated[i],
strlen(afl_environment_deprecated[i])) == 0 &&
env[strlen(afl_environment_deprecated[i])] == '=') {
match = 1;
WARNF("AFL environment variable %s is deprecated!",
afl_environment_deprecated[i]);
issue_detected = 1;
} else {
i++;
}
}
if (match == 0) {
WARNF("Mistyped AFL environment variable: %s", env);
found++;
issue_detected = 1;
}
@ -363,7 +392,7 @@ void read_afl_environment(afl_state_t *afl, char **envp) {
}
if (found) { sleep(2); }
if (issue_detected) { sleep(2); }
}