net: get gateway url

basic api http_get function, (which the definition of will def. change
in the future)

uses libcurl to get the api /gateway to get the wss url, and assumes a
url in case of failure so we at least try authenticating

1 files changed, 43 insertions, 0 deletions

diff --git a/net/api.c b/net/api.c
new file mode 100644
index 0000000..e664c42
--- /dev/null
+++ b/net/api.c
@@ -0,0 +1,43 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <curl/curl.h>
+
+extern char *token;
+
+int http_get(char *url)
+{
+    int pipefd[2];
+    if(pipe(pipefd) < 0)
+        return -errno;
+
+    FILE *write_end = fdopen(pipefd[1], "w");
+
+    int ret = pipefd[0];
+
+    CURL *job = curl_easy_init();
+    if(job == 0) {
+        close(pipefd[0]);
+        ret = -1;
+        goto close_writepipe;
+    }
+
+    curl_easy_setopt(job, CURLOPT_URL, url);
+    curl_easy_setopt(job, CURLOPT_WRITEDATA, write_end);
+    curl_easy_setopt(job, CURLOPT_HTTPHEADER, curl_slist_append(NULL, token));
+    CURLcode res = curl_easy_perform(job);
+
+    if(res > 0) {
+        ret = -res;
+        close(pipefd[0]);
+        goto cleanup;
+    }
+
+cleanup:
+    curl_easy_cleanup(job);
+close_writepipe:
+    fclose(write_end);
+    return ret;
+}