int add_cgi_env(request * req, const char *key, const char *value,
int http_prefix)
{
char *p;
unsigned int prefix_len;
if (http_prefix) {
prefix_len = 5;
} else {
prefix_len = 0;
}
if (req->cgi_env_index < CGI_ENV_MAX) {
p = env_gen_extra(key, value, prefix_len);
if (!p) {
log_error_doc(req);
fprintf(stderr,
"Unable to generate additional CGI environment "
"variable -- ran out of memory!\n");
return 0;
}
if (prefix_len)
memcpy(p, "HTTP_", 5);
req->cgi_env[req->cgi_env_index++] = p;
return 1;
}
log_error_doc(req);
fprintf(stderr, "Unable to generate additional CGI Environment "
"variable \"%s%s=%s\" -- not enough space!\n",
(prefix_len ? "HTTP_" : ""), key, value);
return 0;
}
void create_common_env()
{
int index = 0, i;
/* NOTE NOTE NOTE:
If you (the reader) someday modify this chunk of code to
handle more "common" CGI environment variables, then bump the
value COMMON_CGI_COUNT in defines.h UP
Also, in the case of document_root and server_admin, two variables
that may or may not be defined depending on the way the server
is configured, we check for null values and use an empty
string to denote a NULL value to the environment, as per the
specification. The quote for which follows:
"In all cases, a missing environment variable is
equivalent to a zero-length (NULL) value, and vice versa."
*/
common_cgi_env[index++] = env_gen_extra("PATH",
((cgi_path != NULL) ? cgi_path : DEFAULT_PATH), 0);
common_cgi_env[index++] = env_gen_extra("SERVER_SOFTWARE", SERVER_VERSION, 0);
common_cgi_env[index++] = env_gen_extra("SERVER_NAME", server_name, 0);
common_cgi_env[index++] = env_gen_extra("GATEWAY_INTERFACE", CGI_VERSION, 0);
common_cgi_env[index++] =
env_gen_extra("SERVER_PORT", simple_itoa(server_port), 0);
/* NCSA and APACHE added -- not in CGI spec */
common_cgi_env[index++] = env_gen_extra("DOCUMENT_ROOT", document_root,0);
/* NCSA added */
common_cgi_env[index++] = env_gen_extra("SERVER_ROOT", server_root,0);
/* APACHE added */
common_cgi_env[index++] = env_gen_extra("SERVER_ADMIN", server_admin, 0);
common_cgi_env[index] = NULL;
/* Sanity checking -- make *sure* the memory got allocated */
if (index > COMMON_CGI_COUNT) {
log_error_time();
fprintf(stderr, "COMMON_CGI_COUNT not high enough.\n");
exit(1);
}
for(i = 0; i < index; ++i) {
if (common_cgi_env[i] == NULL) {
log_error_time();
fprintf(stderr, "Unable to allocate a component of common_cgi_env - out of memory.\n");
exit(1);
}
}
}
void add_cgi_env(request * req, char *key, char *value)
{
char *p;
if (req->cgi_env_index >= (MAX_CGI_VARS - 17)) /* 16 in complete_env */
return;
p = env_gen_extra(key, value, 5);
memcpy(p, "HTTP_", 5);
req->cgi_env[req->cgi_env_index++] = p;
req->cgi_env[req->cgi_env_index] = 0; /* fix cgi_env */
}
void add_to_common_env(char *key, char *value)
{
common_cgi_env = realloc(common_cgi_env, (common_cgi_env_count + 2) * (sizeof(char *)));
if (common_cgi_env== NULL) {
DIE("Unable to allocate memory for common CGI environment variable.");
}
common_cgi_env[common_cgi_env_count] = env_gen_extra(key,value, 0);
if (common_cgi_env[common_cgi_env_count] == NULL) {
/* errors already reported */
DIE("memory allocation failure in add_to_common_env");
}
common_cgi_env[++common_cgi_env_count] = NULL;
/* I find it hard to believe that somebody would actually
* make 90+ *common* CGI variables, but it's always better
* to be safe.
*/
if (common_cgi_env_count > CGI_ENV_MAX) {
DIE("far too many common CGI environment variables added.");
}
}