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| author |   Sebastien Douheret <sebastien.douheret@iot.bzh> | 2019-07-05 10:45:19 +0200 |
|---|---|---|
| committer | Sebastien Douheret <sebastien.douheret@iot.bzh> | 2019-07-05 15:25:38 +0200 |
| commit | 2f7b5e0433a58a118c4152b93a4f850d7f6a1467 (patch) | |
| tree | a8e9a31f6e7529c72ce77fab8c0e670e7daa837d | |
| parent | 8d55c66257e0b949ee6daa9dc63f287f4ab9df40 (diff) | |
Improve buf allocation for curl requests
Use alloca to allocate write buffer used to send curl requests.
Better solution would be to allocate one time (using malloc) and
then realloc if needed (IOW current buf size is not suffisant).
Change-Id: I9c2ea8628025edd76964993e11d693f1b945045b
Signed-off-by: Sebastien Douheret <sebastien.douheret@iot.bzh>
| -rw-r--r-- | src/plugins/influxdb-writer.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/plugins/influxdb-writer.c b/src/plugins/influxdb-writer.c index 04c94bd..79eb72c 100644 --- a/src/plugins/influxdb-writer.c +++ b/src/plugins/influxdb-writer.c @@ -95,10 +95,11 @@ CURL* make_curl_write_post(afb_api_t apiHandle, const char* url, json_object* me CURL* curl = NULL; size_t lpd = 0, len_write = 0, i = 0; char** post_data; - char write[URL_MAXIMUM_LENGTH] = ""; + char* write = alloca(URL_MAXIMUM_LENGTH); // FIXME: better to use malloc and relloc bigger when needed struct series_t* serie = NULL; json_object* metricsArrayJ = NULL; + write[0] = '\0'; if (json_object_is_type(metricsJ, json_type_array)) { lpd = json_object_array_length(metricsJ); @@ -125,8 +126,8 @@ CURL* make_curl_write_post(afb_api_t apiHandle, const char* url, json_object* me len_write = format_write_args(write, serie); if (len_write > 0) { post_data[i] = malloc(len_write + 1); - strcpy(post_data[i], write); - memset(write, 0, len_write); + strncpy(post_data[i], write, len_write+1); + write[0] = '\0'; } } } |