static int complete_env(request * req)
#endif
{
#ifndef EXCLUDE_CGI
int i;
for (i = 0; common_cgi_env[i]; i++)
req->cgi_env[i] = common_cgi_env[i];
{
const char *w;
switch (req->method) {
case M_POST:
w = "POST";
break;
case M_HEAD:
w = "HEAD";
break;
case M_GET:
w = "GET";
break;
default:
w = "UNKNOWN";
break;
}
my_add_cgi_env(req, "REQUEST_METHOD", w);
}
if (req->header_host)
my_add_cgi_env(req, "HTTP_HOST", req->header_host);
my_add_cgi_env(req, "SERVER_ADDR", req->local_ip_addr);
my_add_cgi_env(req, "SERVER_PROTOCOL",
http_ver_string(req->http_version));
my_add_cgi_env(req, "REQUEST_URI", req->request_uri);
if (req->path_info)
my_add_cgi_env(req, "PATH_INFO", req->path_info);
if (req->path_translated)
/* while path_translated depends on path_info,
* there are cases when path_translated might
* not exist when path_info does
*/
my_add_cgi_env(req, "PATH_TRANSLATED", req->path_translated);
my_add_cgi_env(req, "SCRIPT_NAME", req->script_name);
if (req->query_string)
my_add_cgi_env(req, "QUERY_STRING", req->query_string);
my_add_cgi_env(req, "REMOTE_ADDR", req->remote_ip_addr);
my_add_cgi_env(req, "REMOTE_PORT", simple_itoa(req->remote_port));
if (req->method == M_POST) {
if (req->content_type) {
my_add_cgi_env(req, "CONTENT_TYPE", req->content_type);
} else {
my_add_cgi_env(req, "CONTENT_TYPE", default_type);
}
if (req->content_length) {
my_add_cgi_env(req, "CONTENT_LENGTH", req->content_length);
}
}
#ifdef ACCEPT_ON
if (req->accept[0])
my_add_cgi_env(req, "HTTP_ACCEPT", req->accept);
#endif
if (req->cgi_env_index < CGI_ENV_MAX + 1) {
req->cgi_env[req->cgi_env_index] = NULL; /* terminate */
return 1;
}
log_error_doc(req);
fprintf(stderr, "Not enough space in CGI environment for remainder"
" of variables.\n");
#endif //!EXCLUDE_CGI
return 0;
}
int process_get(request * req)
{
off_t bytes_written;
volatile off_t bytes_to_write;
if (req->method == M_HEAD) {
return complete_response(req);
}
bytes_to_write = (req->ranges->stop - req->ranges->start) + 1;
if (bytes_to_write > system_bufsize)
bytes_to_write = system_bufsize;
if (setjmp(env) == 0) {
handle_sigbus = 1;
bytes_written = write(req->fd, req->data_mem + req->ranges->start,
bytes_to_write);
handle_sigbus = 0;
/* OK, SIGBUS **after** this point is very bad! */
} else {
/* sigbus! */
req->status = DEAD;
log_error_doc(req);
fprintf(stderr, "%sGot SIGBUS in write(2)!\n",
get_commonlog_time());
/* sending an error here is inappropriate
* if we are here, the file is mmapped, and thus,
* a content-length has been sent. If we send fewer bytes
* the client knows there has been a problem.
* We run the risk of accidentally sending the right number
* of bytes (or a few too many) and the client
* won't be the wiser.
*/
return 0;
}
if (bytes_written < 0) {
if (errno == EWOULDBLOCK || errno == EAGAIN)
return -1;
/* request blocked at the pipe level, but keep going */
else {
#ifdef QUIET_DISCONNECT
if (errno != EPIPE) {
#else
if (1) {
#endif
log_error_doc(req);
/* Can generate lots of log entries, */
perror("write");
/* OK to disable if your logs get too big */
}
req->status = DEAD;
return 0;
}
}
req->bytes_written += bytes_written;
req->ranges->start += bytes_written;
if ((req->ranges->stop + 1 - req->ranges->start) == 0) {
return complete_response(req);
}
return 1; /* more to do */
}
/*
* Name: get_dir
* Description: Called from process_get if the request is a directory.
* statbuf must describe directory on input, since we may need its
* device, inode, and mtime.
* statbuf is updated, since we may need to check mtimes of a cache.
* returns:
* -1 error
* 0 cgi (either gunzip or auto-generated)
* >0 file descriptor of file
*/
int get_dir(request * req, struct stat *statbuf)
{
char pathname_with_index[MAX_PATH_LENGTH];
int data_fd;
if (directory_index) { /* look for index.html first?? */
unsigned int l1, l2;
l1 = strlen(req->pathname);
l2 = strlen(directory_index);
#ifdef GUNZIP
if (l1 + l2 + 3 + 1 > sizeof(pathname_with_index)) { /* for .gz */
#else
if (l1 + l2 + 1 > sizeof(pathname_with_index)) {
#endif
errno = ENOMEM;
boa_perror(req, "pathname_with_index not large enough for pathname + index");
return -1;
}
memcpy(pathname_with_index, req->pathname, l1); /* doesn't copy NUL */
memcpy(pathname_with_index + l1, directory_index, l2 + 1); /* does */
data_fd = open(pathname_with_index, O_RDONLY|O_LARGEFILE);
if (data_fd != -1) { /* user's index file */
/* We have to assume that directory_index will fit, because
* if it doesn't, well, that's a huge configuration problem.
* this is only the 'index.html' pathname for mime type
*/
memcpy(req->request_uri, directory_index, l2 + 1); /* for mimetype */
fstat(data_fd, statbuf);
return data_fd;
}
if (errno == EACCES) {
send_r_forbidden(req);
return -1;
} else if (errno != ENOENT) {
/* if there is an error *other* than EACCES or ENOENT */
send_r_not_found(req);
return -1;
}
#ifdef GUNZIP
/* if we are here, trying index.html didn't work
* try index.html.gz
*/
strcat(pathname_with_index, ".gz");
data_fd = open(pathname_with_index, O_RDONLY|O_LARGEFILE);
if (data_fd != -1) { /* user's index file */
close(data_fd);
req->response_status = R_REQUEST_OK;
SQUASH_KA(req);
if (req->pathname)
free(req->pathname);
req->pathname = strdup(pathname_with_index);
if (!req->pathname) {
boa_perror(req, "strdup of pathname_with_index for .gz files " __FILE__ ":" STR(__LINE__));
return 0;
}
if (req->http_version != HTTP09) {
req_write(req, http_ver_string(req->http_version));
req_write(req, " 200 OK-GUNZIP" CRLF);
print_http_headers(req);
print_last_modified(req);
req_write(req, "Content-Type: ");
req_write(req, get_mime_type(directory_index));
req_write(req, CRLF CRLF);
req_flush(req);
}
if (req->method == M_HEAD)
return 0;
return init_cgi(req);
}
#endif
}
/* only here if index.html, index.html.gz don't exist */
if (dirmaker != NULL) { /* don't look for index.html... maybe automake? */
req->response_status = R_REQUEST_OK;
SQUASH_KA(req);
/* the indexer should take care of all headers */
if (req->http_version != HTTP09) {
req_write(req, http_ver_string(req->http_version));
req_write(req, " 200 OK" CRLF);
print_http_headers(req);
print_last_modified(req);
req_write(req, "Content-Type: text/html" CRLF CRLF);
req_flush(req);
}
if (req->method == M_HEAD)
return 0;
return init_cgi(req);
/* in this case, 0 means success */
} else if (cachedir) {
return get_cachedir_file(req, statbuf);
} else { /* neither index.html nor autogenerate are allowed */
send_r_forbidden(req);
return -1; /* nothing worked */
}
}
static int get_cachedir_file(request * req, struct stat *statbuf)
{
char pathname_with_index[MAX_PATH_LENGTH];
int data_fd;
time_t real_dir_mtime;
real_dir_mtime = statbuf->st_mtime;
/* the sizeof() doesn't need a -1 because snprintf will
* include the NUL when calculating if the size is enough
*/
snprintf(pathname_with_index, sizeof(pathname_with_index),
"%s/dir.%d." PRINTF_OFF_T_ARG, cachedir,
(int) statbuf->st_dev, statbuf->st_ino);
data_fd = open(pathname_with_index, O_RDONLY|O_LARGEFILE);
if (data_fd != -1) { /* index cache */
fstat(data_fd, statbuf);
if (statbuf->st_mtime > real_dir_mtime) {
statbuf->st_mtime = real_dir_mtime; /* lie */
strcpy(req->request_uri, directory_index); /* for mimetype */
return data_fd;
}
close(data_fd);
unlink(pathname_with_index); /* cache is stale, delete it */
}
if (index_directory(req, pathname_with_index) == -1)
return -1;
data_fd = open(pathname_with_index, O_RDONLY|O_LARGEFILE); /* Last chance */
if (data_fd != -1) {
strcpy(req->request_uri, directory_index); /* for mimetype */
fstat(data_fd, statbuf);
statbuf->st_mtime = real_dir_mtime; /* lie */
return data_fd;
}
boa_perror(req, "re-opening dircache");
return -1; /* Nothing worked. */
}
int init_get(request * req)
{
int data_fd, saved_errno;
struct stat statbuf;
volatile off_t bytes_free;
data_fd = open(req->pathname, O_RDONLY|O_LARGEFILE);
saved_errno = errno; /* might not get used */
while (use_lang_rewrite && data_fd == -1 && errno == ENOENT) {
/* We cannot open that file - Check whether we can rewrite it
* to a different language suffix. We only support filenames
* of the format: "foo.ll.html" as an alias for "foo.html". */
unsigned int len;
len = strlen(req->pathname);
if (len < 6 || strcmp (req->pathname + len - 5, ".html"))
break; /* does not end in ".html" */
if (len > 8 && req->pathname[len-8] == '.'
&& req->pathname[len-7] >= 'a' && req->pathname[len-7] <= 'z'
&& req->pathname[len-6] >= 'a' && req->pathname[len-6] <= 'z') {
/* The request was for a language dependent file. Strip
* it and try the generic form. */
char save_name[8];
strcpy (save_name, req->pathname + len - 7);
strcpy (req->pathname + len - 7, "html");
data_fd = open(req->pathname, O_RDONLY);
if (data_fd == -1)
strcpy (req->pathname + len - 7, save_name);
break;
}
else if ( 0 ) {
/* Fixme: Other items to try from the list of accepted_languages */
data_fd = open(req->pathname, O_RDONLY);
}
else
break;
}
#ifdef GUNZIP
if (data_fd == -1 && errno == ENOENT) {
/* cannot open */
/* it's either a gunzipped file or a directory */
char gzip_pathname[MAX_PATH_LENGTH];
unsigned int len;
len = strlen(req->pathname);
if (len + 4 > sizeof(gzip_pathname)) {
log_error_doc(req);
fprintf(stderr, "Pathname + .gz too long! (%s)\n", req->pathname);
send_r_bad_request(req);
return 0;
}
memcpy(gzip_pathname, req->pathname, len);
memcpy(gzip_pathname + len, ".gz", 3);
gzip_pathname[len + 3] = '\0';
data_fd = open(gzip_pathname, O_RDONLY|O_LARGEFILE);
if (data_fd != -1) {
close(data_fd);
req->response_status = R_REQUEST_OK;
if (req->pathname)
free(req->pathname);
req->pathname = strdup(gzip_pathname);
if (!req->pathname) {
boa_perror(req, "strdup req->pathname for gzipped filename " __FILE__ ":" STR(__LINE__));
return 0;
}
if (req->http_version != HTTP09) {
req_write(req, http_ver_string(req->http_version));
req_write(req, " 200 OK-GUNZIP" CRLF);
print_http_headers(req);
print_content_type(req);
print_last_modified(req);
req_write(req, CRLF);
req_flush(req);
}
if (req->method == M_HEAD)
return 0;
return init_cgi(req);
}
}
#endif
if (data_fd == -1) {
log_error_doc(req);
errno = saved_errno;
perror("document open");
if (saved_errno == ENOENT)
send_r_not_found(req);
else if (saved_errno == EACCES)
send_r_forbidden(req);
else
send_r_bad_request(req);
return 0;
}
#ifdef ACCESS_CONTROL
if (!access_allow(req->pathname)) {
send_r_forbidden(req);
return 0;
}
#endif
fstat(data_fd, &statbuf);
if (S_ISDIR(statbuf.st_mode)) { /* directory */
close(data_fd); /* close dir */
if (req->pathname[strlen(req->pathname) - 1] != '/') {
char buffer[3 * MAX_PATH_LENGTH + 128];
unsigned int len;
#ifdef ALLOW_LOCAL_REDIRECT
len = strlen(req->request_uri);
if (len + 2 > sizeof(buffer)) {
send_r_error(req);
return 0;
}
memcpy(buffer, req->request_uri, len);
buffer[len] = '/';
buffer[len+1] = '\0';
#else
char *host = server_name;
unsigned int l2;
char *port = NULL;
const char *prefix = hsts_header? "https://" : "http://";
static unsigned int l3 = 0;
static unsigned int l4 = 0;
if (l4 == 0) {
l4 = strlen(prefix);
}
len = strlen(req->request_uri);
if (!port && server_port != 80 && !no_redirect_port) {
port = strdup(simple_itoa(server_port));
if (port == NULL) {
errno = ENOMEM;
boa_perror(req, "Unable to perform simple_itoa conversion on server port!");
return 0;
}
l3 = strlen(port);
}
/* l3 and l4 are done */
if (req->host) {
/* only shows up in vhost mode */
/* what about the port? (in vhost_mode?) */
/* we don't currently report ports that differ
* from out "bound" (listening) port, so we don't care
*/
host = req->host;
}
l2 = strlen(host);
if (server_port != 80 && !no_redirect_port) {
if (l4 + l2 + 1 + l3 + len + 1 > sizeof(buffer)) {
errno = ENOMEM;
boa_perror(req, "buffer not large enough for directory redirect");
return 0;
}
memcpy(buffer, prefix, l4);
memcpy(buffer + l4, host, l2);
buffer[l4 + l2] = ':';
memcpy(buffer + l4 + l2 + 1, port, l3);
memcpy(buffer + l4 + l2 + 1 + l3, req->request_uri, len);
buffer[l4 + l2 + 1 + l3 + len] = '/';
buffer[l4 + l2 + 1 + l3 + len + 1] = '\0';
} else {
if (l4 + l2 + len + 1 > sizeof(buffer)) {
errno = ENOMEM;
boa_perror(req, "buffer not large enough for directory redirect");
return 0;
}
memcpy(buffer, prefix, l4);
memcpy(buffer + l4, host, l2);
memcpy(buffer + l4 + l2, req->request_uri, len);
buffer[l4 + l2 + len] = '/';
buffer[l4 + l2 + len + 1] = '\0';
}
#endif /* ALLOW LOCAL REDIRECT */
send_r_moved_perm(req, buffer);
return 0;
}
data_fd = get_dir(req, &statbuf); /* updates statbuf */
if (data_fd < 0) /* couldn't do it */
return 0; /* errors reported by get_dir */
else if (data_fd == 0 || data_fd == 1)
return data_fd;
/* else, data_fd contains the fd of the file... */
}
if (!S_ISREG(statbuf.st_mode)) { /* regular file */
log_error_doc(req);
fprintf(stderr, "Resulting file is not a regular file.\n");
send_r_bad_request(req);
close(data_fd);
return 0;
}
/* If-UnModified-Since asks
* is the file newer than date located in time_cval
* yes -> return 412
* no -> return 200
*
* If-Modified-Since asks
* is the file date less than or same as the date located in time_cval
* yes -> return 304
* no -> return 200
*
* If-Unmodified-Since overrides If-Modified-Since
*/
/*
if (req->headers[H_IF_UNMODIFIED_SINCE] &&
modified_since(&(statbuf.st_mtime),
req->headers[H_IF_UNMODIFIED_SINCE])) {
send_r_precondition_failed(req);
return 0;
} else
*/
if (req->if_modified_since &&
!modified_since(&(statbuf.st_mtime), req->if_modified_since)) {
send_r_not_modified(req);
close(data_fd);
return 0;
}
req->filesize = statbuf.st_size;
req->last_modified = statbuf.st_mtime;
/* ignore if-range without range */
if (req->header_ifrange && !req->ranges)
req->header_ifrange = NULL;
/* we don't support it yet */
req->header_ifrange = NULL;
/* parse ranges now */
/* we have to wait until req->filesize exists to fix them up */
/* fixup handles handles communicating with the client */
/* ranges_fixup logs as appropriate, and sends
* send_r_invalid_range on error.
*/
if (req->filesize == 0) {
if (req->http_version < HTTP11) {
send_r_request_ok(req);
close(data_fd);
return 0;
}
send_r_no_content(req);
close(data_fd);
return 0;
}
if (req->ranges && !ranges_fixup(req)) {
close(data_fd);
return 0;
}
/* if no range has been set, use default range */
#if 0
DEBUG(DEBUG_RANGE) {
log_error_time();
fprintf(stderr, "if-range: %s\time_cval: %d\tmtime: %d\n",
req->header_ifrange, req->time_cval, statbuf->st_mtime);
}
#endif
/*
If the entity tag given in the If-Range header matches the current
entity tag for the entity, then the server should provide the
specified sub-range of the entity using a 206 (Partial content)
response.
If the entity tag does not match, then the server should
return the entire entity using a 200 (OK) response.
*/
/* IF we have range data *and* no if-range or if-range matches... */
#ifdef MAX_FILE_MMAP
if (req->filesize > MAX_FILE_MMAP) {
req->data_fd = data_fd;
req->status = IOSHUFFLE;
} else
#endif
{
/* NOTE: I (Jon Nelson) tried performing a read(2)
* into the output buffer provided the file data would
* fit, before mmapping, and if successful, writing that
* and stopping there -- all to avoid the cost
* of a mmap. Oddly, it was *slower* in benchmarks.
*/
req->mmap_entry_var = find_mmap(data_fd, &statbuf);
if (req->mmap_entry_var == NULL) {
req->data_fd = data_fd;
req->status = IOSHUFFLE;
} else {
req->data_mem = req->mmap_entry_var->mmap;
close(data_fd); /* close data file */
}
}
if (!req->ranges) {
req->ranges = range_pool_pop();
req->ranges->start = 0;
req->ranges->stop = -1;
if (!ranges_fixup(req)) {
return 0;
}
send_r_request_ok(req);
} else {
/* FIXME: support if-range header here, by the following logic:
* if !req->header_ifrange || st_mtime > header_ifrange,
* send_r_partial_content
* else
* reset-ranges, etc...
*/
if (!req->header_ifrange) {
send_r_partial_content(req);
} else {
/* either no if-range or the if-range does not match */
ranges_reset(req);
req->ranges = range_pool_pop();
req->ranges->start = 0;
req->ranges->stop = -1;
if (!ranges_fixup(req)) {
return 0;
}
send_r_request_ok(req);
}
}
if (req->method == M_HEAD) {
return complete_response(req);
}
bytes_free = 0;
if (req->data_mem) {
/* things can really go tilt if req->buffer_end > BUFFER_SIZE,
* but basically that can't happen
*/
/* We lose statbuf here, so make sure response has been sent */
bytes_free = BUFFER_SIZE - req->buffer_end;
/* 256 bytes for the **trailing** headers */
/* bytes is now how much the buffer can hold
* after the headers
*/
}
if (req->data_mem && bytes_free > 256) {
unsigned int want;
Range *r;
r = req->ranges;
want = (r->stop - r->start) + 1;
if (bytes_free > want)
bytes_free = want;
else {
/* bytes_free <= want */
;
}
if (setjmp(env) == 0) {
handle_sigbus = 1;
memcpy(req->buffer + req->buffer_end,
req->data_mem + r->start, bytes_free);
handle_sigbus = 0;
/* OK, SIGBUS **after** this point is very bad! */
} else {
/* sigbus! */
log_error_doc(req);
reset_output_buffer(req);
send_r_error(req);
log_error("Got SIGBUS in memcpy\n");
return 0;
}
req->buffer_end += bytes_free;
req->bytes_written += bytes_free;
r->start += bytes_free;
if (bytes_free == want) {
/* this will fit due to the 256 extra bytes_free */
return complete_response(req);
}
}
/* We lose statbuf here, so make sure response has been sent */
return 1;
}
int init_get(request * req)
{
int data_fd, saved_errno;
struct stat statbuf;
volatile unsigned int bytes_free;
//fprintf(stderr, "###[%s %d] req->pathname=%s###\n", __FUNCTION__, __LINE__, req->pathname);
//fprintf(stderr, "###[%s %d] req->client_stream=%s###\n", __FUNCTION__, __LINE__, req->client_stream);
//fprintf(stderr, "###[%s %d] req->logline=%s###\n", __FUNCTION__, __LINE__, req->logline);
//fprintf(stderr, "###[%s %d] req->request_uri=%s###\n", __FUNCTION__, __LINE__, req->request_uri);
//fprintf(stderr, "###[%s %d] req->host=%s###\n", __FUNCTION__, __LINE__, req->host);
/* A special GET request: "GET /boaform/formWlanRedirect?redirect-url=wlbasic.htm&wlan_id=0 HTTP/1.1" */
if (strstr(req->request_uri, "formWlanRedirect")) {
char *redirectUrl, *strWlanId, *ptr;
extern void formWlanRedirect2(request *wp, char *redirectUrl, char *strWlanId);
if ((ptr = strstr(req->client_stream, "redirect-url="))) {
redirectUrl = ptr + strlen("redirect-url=");
if ((ptr = strstr(redirectUrl, "&wlan_id="))) {
*ptr = '\0';
strWlanId = ptr + strlen("&wlan_id=");
if ((ptr = strstr(strWlanId, " HTTP"))) {
*ptr = '\0';
//fprintf(stderr, "###[%s %d] redirectUrl=%s strWlanId=%s###\n", __FUNCTION__, __LINE__, redirectUrl, strWlanId);
formWlanRedirect2(req, redirectUrl, strWlanId);
return 0;
}
}
}
}
data_fd = open(req->pathname, O_RDONLY);
saved_errno = errno; /* might not get used */
#ifdef GUNZIP
if (data_fd == -1 && errno == ENOENT) {
/* cannot open */
/* it's either a gunzipped file or a directory */
char gzip_pathname[MAX_PATH_LENGTH];
unsigned int len;
len = strlen(req->pathname);
if (len + 4 > sizeof(gzip_pathname)) {
log_error_doc(req);
fprintf(stderr, "Pathname + .gz too long! (%s)\n", req->pathname);
send_r_bad_request(req);
return 0;
}
memcpy(gzip_pathname, req->pathname, len);
memcpy(gzip_pathname + len, ".gz", 3);
gzip_pathname[len + 3] = '\0';
data_fd = open(gzip_pathname, O_RDONLY);
if (data_fd != -1) {
close(data_fd);
req->response_status = R_REQUEST_OK;
if (req->pathname)
free(req->pathname);
req->pathname = strdup(gzip_pathname);
if (!req->pathname) {
boa_perror(req, "strdup req->pathname for gzipped filename " __FILE__ ":" STR(__LINE__));
return 0;
}
if (req->http_version != HTTP09) {
req_write(req, http_ver_string(req->http_version));
req_write(req, " 200 OK-GUNZIP" CRLF);
print_http_headers(req);
print_content_type(req);
print_last_modified(req);
req_write(req, CRLF);
req_flush(req);
}
if (req->method == M_HEAD)
return 0;
return init_cgi(req);
}
}
#endif
if (data_fd == -1) {
log_error_doc(req);
errno = saved_errno;
DEBUG(DEBUG_BOA) {
perror("document open");
fprintf(stderr, "req->pathname=%s\n", (req->pathname ? req->pathname : "null"));
}
#if 0
if (saved_errno == ENOENT)
send_r_not_found(req);
else if (saved_errno == EACCES)
send_r_forbidden(req);
else
send_r_bad_request(req);
#else
send_redirect_perm(req,"home.htm");
#endif
return 0;
}