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journald: filter fields send from client starting with underscore

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This commit is contained in:
Lennart Poettering 2011-12-17 01:36:47 +01:00
parent d0bbc21caa
commit 2b0ba69bb1
1 changed files with 15 additions and 6 deletions
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9
src/journal/journald.c
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@ -376,9 +376,15 @@ static void process_native_message(Server *s, const void *buffer, size_t buffer_
q = memchr(p, '=', e - p); q = memchr(p, '=', e - p);
if (q) { if (q) {
if (p[0] != '_') {
/* If the field name starts with an
* underscore, skip the variable,
* since that indidates a trusted
* field */
iovec[n].iov_base = (char*) p; iovec[n].iov_base = (char*) p;
iovec[n].iov_len = e - p; iovec[n].iov_len = e - p;
n++; n++;
}
remaining -= (e - p) + 1; remaining -= (e - p) + 1;
p = e + 1; p = e + 1;
@ -411,9 +417,12 @@ static void process_native_message(Server *s, const void *buffer, size_t buffer_
k[e - p] = '='; k[e - p] = '=';
memcpy(k + (e - p) + 1, e + 1 + sizeof(uint64_t), l); memcpy(k + (e - p) + 1, e + 1 + sizeof(uint64_t), l);
if (k[0] != '_') {
iovec[n].iov_base = k; iovec[n].iov_base = k;
iovec[n].iov_len = (e - p) + 1 + l; iovec[n].iov_len = (e - p) + 1 + l;
n++; n++;
} else
free(k);
remaining -= (e - p) + 1 + sizeof(uint64_t) + l + 1; remaining -= (e - p) + 1 + sizeof(uint64_t) + l + 1;
p = e + 1 + sizeof(uint64_t) + l + 1; p = e + 1 + sizeof(uint64_t) + l + 1;