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http: allow client to specify user,device,from,to as X-Limit-yyy

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This commit is contained in:
Jan-Piet Mens
2015-09-09 17:59:48 +02:00
parent 1bee9d0a12
commit d712d90235
1 changed files with 30 additions and 9 deletions
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39
http.c
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@@ -132,13 +132,27 @@ static int json_response(struct mg_connection *conn, JsonNode *json)
}
/*
* Return a copy of a GET/POST parameter or NULL. Caller must free.
* Return a copy of a GET/POST parameter or NULL. The parameter
* may be overriden by an HTTP header called X-Limit-<fieldname>.
* Caller must free if return is non-NULL.
*/
static char *field(struct mg_connection *conn, char *fieldname)
{
char buf[BUFSIZ];
int ret;
int ret, n;
snprintf(buf, sizeof(buf), "X-Limit-%s", fieldname);
for (n = 0; n < conn->num_headers; n++) {
struct mg_header *hh;
hh = &conn->http_headers[n];
// fprintf(stderr, " %s=%s\n", hh->name, hh->value);
if (*hh->name == 'X' && strcasecmp(hh->name, buf) == 0) {
return (strdup(hh->value));
}
}
if ((ret = mg_get_var(conn, fieldname, buf, sizeof(buf))) > 0) {
return (strdup(buf));
@@ -294,6 +308,20 @@ int ev_handler(struct mg_connection *conn, enum mg_event ev)
case MG_REQUEST:
#if 0
for (int n = 0; n < conn->num_headers; n++) {
struct mg_header *hh;
hh = &conn->http_headers[n];
fprintf(stderr, " %s=%s\n", hh->name, hh->value);
}
fprintf(stderr, "%s (%ld) %.*s\n",
conn->uri,
conn->content_len,
(int)conn->content_len,
conn->content);
#endif
/* Websockets URI ?*/
if (strcmp(conn->uri, "/ws/last") == 0) {
@@ -301,13 +329,6 @@ int ev_handler(struct mg_connection *conn, enum mg_event ev)
* WS client sends us "LAST" and we return all
* last locations to it.
*/
#if 0
fprintf(stderr, "%s (%ld) %.*s\n",
conn->uri,
conn->content_len,
(int)conn->content_len,
conn->content);
#endif
if (conn->content_len == 4 && !strncmp(conn->content, "LAST", 4)) {
send_last(conn);
}