2 * "$Id: http.c,v 1.66 2000/10/20 20:23:52 mike Exp $"
4 * HTTP routines for the Common UNIX Printing System (CUPS) scheduler.
6 * Copyright 1997-2000 by Easy Software Products, all rights reserved.
8 * These statusd instructions, statements, and computer programs are the
9 * property of Easy Software Products and are protected by Federal
10 * copyright law. Distribution and use rights are outlined in the file
11 * "LICENSE.txt" which should have been included with this file. If this
12 * file is missing or damaged please contact Easy Software Products
15 * Attn: CUPS Licensing Information
16 * Easy Software Products
17 * 44141 Airport View Drive, Suite 204
18 * Hollywood, Maryland 20636-3111 USA
20 * Voice: (301) 373-9603
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22 * WWW: http://www.cups.org
26 * httpInitialize() - Initialize the HTTP interface library and set the
27 * default HTTP proxy (if any).
28 * httpCheck() - Check to see if there is a pending response from
30 * httpClose() - Close an HTTP connection...
31 * httpConnect() - Connect to a HTTP server.
32 * httpReconnect() - Reconnect to a HTTP server...
33 * httpSeparate() - Separate a Universal Resource Identifier into its
35 * httpSetField() - Set the value of an HTTP header.
36 * httpDelete() - Send a DELETE request to the server.
37 * httpGet() - Send a GET request to the server.
38 * httpHead() - Send a HEAD request to the server.
39 * httpOptions() - Send an OPTIONS request to the server.
40 * httpPost() - Send a POST request to the server.
41 * httpPut() - Send a PUT request to the server.
42 * httpTrace() - Send an TRACE request to the server.
43 * httpFlush() - Flush data from a HTTP connection.
44 * httpRead() - Read data from a HTTP connection.
45 * httpWrite() - Write data to a HTTP connection.
46 * httpGets() - Get a line of text from a HTTP connection.
47 * httpPrintf() - Print a formatted string to a HTTP connection.
48 * httpStatus() - Return a short string describing a HTTP status code.
49 * httpGetDateString() - Get a formatted date/time string from a time value.
50 * httpGetDateTime() - Get a time value from a formatted date/time string.
51 * httpUpdate() - Update the current HTTP state for incoming data.
52 * httpDecode64() - Base64-decode a string.
53 * httpEncode64() - Base64-encode a string.
54 * httpGetLength() - Get the amount of data remaining from the
55 * content-length or transfer-encoding fields.
56 * http_field() - Return the field index for a field name.
57 * http_send() - Send a request with all fields and the trailing
62 * Include necessary headers...
77 #if !defined(WIN32) && !defined(__EMX__)
79 #endif /* !WIN32 && !__EMX__ */
82 * Some operating systems have done away with the Fxxxx constants for
83 * the fcntl() call; this works around that "feature"...
87 # define FNONBLK O_NONBLOCK
95 static http_field_t
http_field(const char *name
);
96 static int http_send(http_t
*http
, http_state_t request
,
104 static const char *http_fields
[] =
121 "If-Unmodified-since",
134 static const char *days
[7] =
144 static const char *months
[12] =
162 * 'httpInitialize()' - Initialize the HTTP interface library and set the
163 * default HTTP proxy (if any).
169 #if defined(WIN32) || defined(__EMX__)
170 WSADATA winsockdata
; /* WinSock data */
171 static int initialized
= 0;/* Has WinSock been initialized? */
175 WSAStartup(MAKEWORD(1,1), &winsockdata
);
176 #elif defined(HAVE_SIGSET)
177 sigset(SIGPIPE
, SIG_IGN
);
178 #elif defined(HAVE_SIGACTION)
179 struct sigaction action
; /* POSIX sigaction data */
183 * Ignore SIGPIPE signals...
186 memset(&action
, 0, sizeof(action
));
187 action
.sa_handler
= SIG_IGN
;
188 sigaction(SIGPIPE
, &action
, NULL
);
190 signal(SIGPIPE
, SIG_IGN
);
191 #endif /* WIN32 || __EMX__ */
196 * 'httpCheck()' - Check to see if there is a pending response from the server.
199 int /* O - 0 = no data, 1 = data available */
200 httpCheck(http_t
*http
) /* I - HTTP connection */
202 fd_set input
; /* Input set for select() */
203 struct timeval timeout
; /* Timeout */
207 * First see if there is data in the buffer...
217 * Then try doing a select() to poll the socket...
221 FD_SET(http
->fd
, &input
);
226 return (select(http
->fd
+ 1, &input
, NULL
, NULL
, &timeout
) > 0);
231 * 'httpClose()' - Close an HTTP connection...
235 httpClose(http_t
*http
) /* I - Connection to close */
241 closesocket(http
->fd
);
251 * 'httpConnect()' - Connect to a HTTP server.
254 http_t
* /* O - New HTTP connection */
255 httpConnect(const char *host
, /* I - Host to connect to */
256 int port
) /* I - Port number */
258 http_t
*http
; /* New HTTP connection */
259 struct hostent
*hostaddr
; /* Host address data */
271 if ((hostaddr
= gethostbyname(host
)) == NULL
)
275 * Allocate memory for the structure...
278 http
= calloc(sizeof(http_t
), 1);
282 http
->version
= HTTP_1_1
;
284 http
->activity
= time(NULL
);
287 * Copy the hostname and port and then "reconnect"...
290 strncpy(http
->hostname
, host
, sizeof(http
->hostname
) - 1);
291 memcpy((char *)&(http
->hostaddr
.sin_addr
), hostaddr
->h_addr
, hostaddr
->h_length
);
292 http
->hostaddr
.sin_family
= hostaddr
->h_addrtype
;
294 http
->hostaddr
.sin_port
= htons((u_short
)port
);
296 http
->hostaddr
.sin_port
= htons(port
);
298 if (httpReconnect(http
))
309 * 'httpReconnect()' - Reconnect to a HTTP server...
312 int /* O - 0 on success, non-zero on failure */
313 httpReconnect(http_t
*http
) /* I - HTTP data */
315 int val
; /* Socket option value */
319 * Close any previously open socket...
324 closesocket(http
->fd
);
330 * Create the socket and set options to allow reuse.
333 if ((http
->fd
= socket(AF_INET
, SOCK_STREAM
, 0)) < 0)
335 #if defined(WIN32) || defined(__EMX__)
336 http
->error
= WSAGetLastError();
339 #endif /* WIN32 || __EMX__ */
340 http
->status
= HTTP_ERROR
;
345 fcntl(http
->fd
, F_SETFD
, FD_CLOEXEC
); /* Close this socket when starting *
346 * other processes... */
347 #endif /* FD_CLOEXEC */
350 setsockopt(http
->fd
, SOL_SOCKET
, SO_REUSEADDR
, (char *)&val
, sizeof(val
));
354 setsockopt(http
->fd
, SOL_SOCKET
, SO_REUSEPORT
, &val
, sizeof(val
));
355 #endif /* SO_REUSEPORT */
358 * Connect to the server...
361 if (connect(http
->fd
, (struct sockaddr
*)&(http
->hostaddr
),
362 sizeof(http
->hostaddr
)) < 0)
364 #if defined(WIN32) || defined(__EMX__)
365 http
->error
= WSAGetLastError();
368 #endif /* WIN32 || __EMX__ */
369 http
->status
= HTTP_ERROR
;
372 closesocket(http
->fd
);
381 http
->status
= HTTP_CONTINUE
;
388 * 'httpSeparate()' - Separate a Universal Resource Identifier into its
393 httpSeparate(const char *uri
, /* I - Universal Resource Identifier */
394 char *method
, /* O - Method [32] (http, https, etc.) */
395 char *username
, /* O - Username [32] */
396 char *host
, /* O - Hostname [32] */
397 int *port
, /* O - Port number to use */
398 char *resource
) /* O - Resource/filename [1024] */
400 char *ptr
; /* Pointer into string... */
401 const char *atsign
, /* @ sign */
402 *slash
; /* Separator */
405 if (uri
== NULL
|| method
== NULL
|| username
== NULL
|| host
== NULL
||
406 port
== NULL
|| resource
== NULL
)
410 * Grab the method portion of the URI...
413 if (strncmp(uri
, "//", 2) == 0)
416 * Workaround for HP IPP client bug...
419 strcpy(method
, "ipp");
424 * Standard URI with method...
428 while (*uri
!= ':' && *uri
!= '\0')
436 * If the method contains a period or slash, then it's probably
437 * hostname/filename...
440 if (strchr(host
, '.') != NULL
|| strchr(host
, '/') != NULL
|| *uri
== '\0')
442 if ((ptr
= strchr(host
, '/')) != NULL
)
444 strncpy(resource
, ptr
, HTTP_MAX_URI
- 1);
445 resource
[HTTP_MAX_URI
- 1] = '\0';
454 * OK, we have "hostname:port[/resource]"...
457 *port
= strtol(uri
, (char **)&uri
, 10);
461 strncpy(resource
, uri
, HTTP_MAX_URI
- 1);
462 resource
[HTTP_MAX_URI
- 1] = '\0';
468 strcpy(method
, "http");
474 strncpy(method
, host
, 31);
480 * If the method starts with less than 2 slashes then it is a local resource...
483 if (strncmp(uri
, "//", 2) != 0)
485 strncpy(resource
, uri
, 1023);
486 resource
[1023] = '\0';
495 * Grab the usenname, if any...
501 if ((slash
= strchr(uri
, '/')) == NULL
)
502 slash
= uri
+ strlen(uri
);
504 if ((atsign
= strchr(uri
, '@')) != NULL
&& atsign
< slash
)
507 * Got a username:password combo...
511 uri
< atsign
&& ptr
< (username
+ sizeof(username
) - 1);
522 * Grab the hostname...
526 while (*uri
!= ':' && *uri
!= '/' && *uri
!= '\0')
533 if (strcasecmp(method
, "http") == 0)
535 else if (strcasecmp(method
, "https") == 0)
537 else if (strcasecmp(method
, "ipp") == 0)
539 else if (strcasecmp(method
, "socket") == 0) /* Not registered yet... */
547 * Parse port number...
552 while (isdigit(*uri
))
554 *port
= (*port
* 10) + *uri
- '0';
562 * Hostname but no port or path...
571 * The remaining portion is the resource string...
574 strncpy(resource
, uri
, HTTP_MAX_URI
- 1);
575 resource
[HTTP_MAX_URI
- 1] = '\0';
580 * 'httpGetSubField()' - Get a sub-field value.
583 char * /* O - Value or NULL */
584 httpGetSubField(http_t
*http
, /* I - HTTP data */
585 http_field_t field
, /* I - Field index */
586 const char *name
, /* I - Name of sub-field */
587 char *value
) /* O - Value string */
589 const char *fptr
; /* Pointer into field */
590 char temp
[HTTP_MAX_VALUE
], /* Temporary buffer for name */
591 *ptr
; /* Pointer into string buffer */
595 field
< HTTP_FIELD_ACCEPT_LANGUAGE
||
596 field
> HTTP_FIELD_WWW_AUTHENTICATE
||
597 name
== NULL
|| value
== NULL
)
600 for (fptr
= http
->fields
[field
]; *fptr
;)
603 * Skip leading whitespace...
606 while (isspace(*fptr
));
616 * Get the sub-field name...
620 *fptr
&& *fptr
!= '=' && !isspace(*fptr
) && ptr
< (temp
+ sizeof(temp
) - 1);
626 * Skip trailing chars up to the '='...
629 while (*fptr
&& *fptr
!= '=')
636 * Skip = and leading whitespace...
641 while (isspace(*fptr
));
647 * Read quoted string...
650 for (ptr
= value
, fptr
++;
651 *fptr
&& *fptr
!= '\"' && ptr
< (value
+ HTTP_MAX_VALUE
- 1);
656 while (*fptr
&& *fptr
!= '\"')
665 * Read unquoted string...
669 *fptr
&& !isspace(*fptr
) && *fptr
!= ',' && ptr
< (value
+ HTTP_MAX_VALUE
- 1);
674 while (*fptr
&& !isspace(*fptr
) && *fptr
!= ',')
679 * See if this is the one...
682 if (strcmp(name
, temp
) == 0)
693 * 'httpSetField()' - Set the value of an HTTP header.
697 httpSetField(http_t
*http
, /* I - HTTP data */
698 http_field_t field
, /* I - Field index */
699 const char *value
) /* I - Value */
702 field
< HTTP_FIELD_ACCEPT_LANGUAGE
||
703 field
> HTTP_FIELD_WWW_AUTHENTICATE
||
707 strncpy(http
->fields
[field
], value
, HTTP_MAX_VALUE
- 1);
708 http
->fields
[field
][HTTP_MAX_VALUE
- 1] = '\0';
713 * 'httpDelete()' - Send a DELETE request to the server.
716 int /* O - Status of call (0 = success) */
717 httpDelete(http_t
*http
, /* I - HTTP data */
718 const char *uri
) /* I - URI to delete */
720 return (http_send(http
, HTTP_DELETE
, uri
));
725 * 'httpGet()' - Send a GET request to the server.
728 int /* O - Status of call (0 = success) */
729 httpGet(http_t
*http
, /* I - HTTP data */
730 const char *uri
) /* I - URI to get */
732 return (http_send(http
, HTTP_GET
, uri
));
737 * 'httpHead()' - Send a HEAD request to the server.
740 int /* O - Status of call (0 = success) */
741 httpHead(http_t
*http
, /* I - HTTP data */
742 const char *uri
) /* I - URI for head */
744 return (http_send(http
, HTTP_HEAD
, uri
));
749 * 'httpOptions()' - Send an OPTIONS request to the server.
752 int /* O - Status of call (0 = success) */
753 httpOptions(http_t
*http
, /* I - HTTP data */
754 const char *uri
) /* I - URI for options */
756 return (http_send(http
, HTTP_OPTIONS
, uri
));
761 * 'httpPost()' - Send a POST request to the server.
764 int /* O - Status of call (0 = success) */
765 httpPost(http_t
*http
, /* I - HTTP data */
766 const char *uri
) /* I - URI for post */
770 return (http_send(http
, HTTP_POST
, uri
));
775 * 'httpPut()' - Send a PUT request to the server.
778 int /* O - Status of call (0 = success) */
779 httpPut(http_t
*http
, /* I - HTTP data */
780 const char *uri
) /* I - URI to put */
784 return (http_send(http
, HTTP_PUT
, uri
));
789 * 'httpTrace()' - Send an TRACE request to the server.
792 int /* O - Status of call (0 = success) */
793 httpTrace(http_t
*http
, /* I - HTTP data */
794 const char *uri
) /* I - URI for trace */
796 return (http_send(http
, HTTP_TRACE
, uri
));
801 * 'httpFlush()' - Flush data from a HTTP connection.
805 httpFlush(http_t
*http
) /* I - HTTP data */
807 char buffer
[8192]; /* Junk buffer */
810 while (httpRead(http
, buffer
, sizeof(buffer
)) > 0);
815 * 'httpRead()' - Read data from a HTTP connection.
818 int /* O - Number of bytes read */
819 httpRead(http_t
*http
, /* I - HTTP data */
820 char *buffer
, /* I - Buffer for data */
821 int length
) /* I - Maximum number of bytes */
823 int bytes
; /* Bytes read */
824 char len
[32]; /* Length string */
827 DEBUG_printf(("httpRead(%08x, %08x, %d)\n", http
, buffer
, length
));
829 if (http
== NULL
|| buffer
== NULL
)
832 http
->activity
= time(NULL
);
837 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
&&
838 http
->data_remaining
<= 0)
840 DEBUG_puts("httpRead: Getting chunk length...");
842 if (httpGets(len
, sizeof(len
), http
) == NULL
)
844 DEBUG_puts("httpRead: Could not get length!");
848 http
->data_remaining
= strtol(len
, NULL
, 16);
851 DEBUG_printf(("httpRead: data_remaining = %d\n", http
->data_remaining
));
853 if (http
->data_remaining
== 0)
856 * A zero-length chunk ends a transfer; unless we are reading POST
860 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
861 httpGets(len
, sizeof(len
), http
);
863 if (http
->state
== HTTP_POST_RECV
)
866 http
->state
= HTTP_WAITING
;
870 else if (length
> http
->data_remaining
)
871 length
= http
->data_remaining
;
875 if (length
> http
->used
)
880 DEBUG_printf(("httpRead: grabbing %d bytes from input buffer...\n", bytes
));
882 memcpy(buffer
, http
->buffer
, length
);
883 http
->used
-= length
;
886 memcpy(http
->buffer
, http
->buffer
+ length
, http
->used
);
890 DEBUG_printf(("httpRead: reading %d bytes from socket...\n", length
));
891 bytes
= recv(http
->fd
, buffer
, length
, 0);
892 DEBUG_printf(("httpRead: read %d bytes from socket...\n", bytes
));
896 http
->data_remaining
-= bytes
;
898 #if defined(WIN32) || defined(__EMX__)
899 http
->error
= WSAGetLastError();
902 #endif /* WIN32 || __EMX__ */
904 if (http
->data_remaining
== 0)
906 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
907 httpGets(len
, sizeof(len
), http
);
909 if (http
->data_encoding
!= HTTP_ENCODE_CHUNKED
)
911 if (http
->state
== HTTP_POST_RECV
)
914 http
->state
= HTTP_WAITING
;
923 * 'httpWrite()' - Write data to a HTTP connection.
926 int /* O - Number of bytes written */
927 httpWrite(http_t
*http
, /* I - HTTP data */
928 const char *buffer
, /* I - Buffer for data */
929 int length
) /* I - Number of bytes to write */
931 int tbytes
, /* Total bytes sent */
932 bytes
; /* Bytes sent */
935 if (http
== NULL
|| buffer
== NULL
)
938 http
->activity
= time(NULL
);
940 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
942 if (httpPrintf(http
, "%x\r\n", length
) < 0)
948 * A zero-length chunk ends a transfer; unless we are sending POST
952 DEBUG_puts("httpWrite: changing states...");
954 if (http
->state
== HTTP_POST_RECV
)
957 http
->state
= HTTP_WAITING
;
959 if (httpPrintf(http
, "\r\n") < 0)
970 bytes
= send(http
->fd
, buffer
, length
, 0);
973 DEBUG_puts("httpWrite: error writing data...\n");
981 if (http
->data_encoding
== HTTP_ENCODE_LENGTH
)
982 http
->data_remaining
-= bytes
;
985 if (http
->data_encoding
== HTTP_ENCODE_CHUNKED
)
986 if (httpPrintf(http
, "\r\n") < 0)
989 if (http
->data_remaining
== 0 && http
->data_encoding
== HTTP_ENCODE_LENGTH
)
992 * Finished with the transfer; unless we are sending POST data, go idle...
995 DEBUG_puts("httpWrite: changing states...");
997 if (http
->state
== HTTP_POST_RECV
)
1000 http
->state
= HTTP_WAITING
;
1003 DEBUG_printf(("httpWrite: wrote %d bytes...\n", tbytes
));
1010 * 'httpGets()' - Get a line of text from a HTTP connection.
1013 char * /* O - Line or NULL */
1014 httpGets(char *line
, /* I - Line to read into */
1015 int length
, /* I - Max length of buffer */
1016 http_t
*http
) /* I - HTTP data */
1018 char *lineptr
, /* Pointer into line */
1019 *bufptr
, /* Pointer into input buffer */
1020 *bufend
; /* Pointer to end of buffer */
1021 int bytes
; /* Number of bytes read */
1024 DEBUG_printf(("httpGets(%08x, %d, %08x)\n", line
, length
, http
));
1026 if (http
== NULL
|| line
== NULL
)
1030 * Pre-scan the buffer and see if there is a newline in there...
1033 #if defined(WIN32) || defined(__EMX__)
1037 #endif /* WIN32 || __EMX__ */
1041 bufptr
= http
->buffer
;
1042 bufend
= http
->buffer
+ http
->used
;
1044 while (bufptr
< bufend
)
1045 if (*bufptr
== 0x0a)
1050 if (bufptr
>= bufend
&& http
->used
< HTTP_MAX_BUFFER
)
1053 * No newline; see if there is more data to be read...
1056 if ((bytes
= recv(http
->fd
, bufend
, HTTP_MAX_BUFFER
- http
->used
, 0)) < 0)
1059 * Nope, can't get a line this time...
1062 #if defined(WIN32) || defined(__EMX__)
1063 if (WSAGetLastError() != http
->error
)
1065 http
->error
= WSAGetLastError();
1069 DEBUG_printf(("httpGets(): recv() error %d!\n", WSAGetLastError()));
1071 if (errno
!= http
->error
)
1073 http
->error
= errno
;
1077 DEBUG_printf(("httpGets(): recv() error %d!\n", errno
));
1078 #endif /* WIN32 || __EMX__ */
1082 else if (bytes
== 0)
1085 http
->error
= EPIPE
;
1091 * Yup, update the amount used and the end pointer...
1094 http
->used
+= bytes
;
1098 while (bufptr
>= bufend
&& http
->used
< HTTP_MAX_BUFFER
);
1100 http
->activity
= time(NULL
);
1103 * Read a line from the buffer...
1107 bufptr
= http
->buffer
;
1110 while (bufptr
< bufend
&& bytes
< length
)
1114 if (*bufptr
== 0x0a)
1119 http
->used
-= bytes
;
1121 memcpy(http
->buffer
, bufptr
, http
->used
);
1123 DEBUG_printf(("httpGets(): Returning \"%s\"\n", line
));
1126 else if (*bufptr
== 0x0d)
1129 *lineptr
++ = *bufptr
++;
1132 DEBUG_puts("httpGets(): No new line available!");
1139 * 'httpPrintf()' - Print a formatted string to a HTTP connection.
1142 int /* O - Number of bytes written */
1143 httpPrintf(http_t
*http
, /* I - HTTP data */
1144 const char *format
, /* I - printf-style format string */
1145 ...) /* I - Additional args as needed */
1147 int bytes
, /* Number of bytes to write */
1148 nbytes
, /* Number of bytes written */
1149 tbytes
; /* Number of bytes all together */
1150 char buf
[HTTP_MAX_BUFFER
], /* Buffer for formatted string */
1151 *bufptr
; /* Pointer into buffer */
1152 va_list ap
; /* Variable argument pointer */
1155 va_start(ap
, format
);
1156 bytes
= vsnprintf(buf
, sizeof(buf
), format
, ap
);
1159 DEBUG_printf(("httpPrintf: %s", buf
));
1161 for (tbytes
= 0, bufptr
= buf
; tbytes
< bytes
; tbytes
+= nbytes
, bufptr
+= nbytes
)
1162 if ((nbytes
= send(http
->fd
, bufptr
, bytes
- tbytes
, 0)) < 0)
1170 * 'httpStatus()' - Return a short string describing a HTTP status code.
1173 const char * /* O - String or NULL */
1174 httpStatus(http_status_t status
) /* I - HTTP status code */
1182 case HTTP_ACCEPTED
:
1183 return ("Accepted");
1184 case HTTP_NO_CONTENT
:
1185 return ("No Content");
1186 case HTTP_NOT_MODIFIED
:
1187 return ("Not Modified");
1188 case HTTP_BAD_REQUEST
:
1189 return ("Bad Request");
1190 case HTTP_UNAUTHORIZED
:
1191 return ("Unauthorized");
1192 case HTTP_FORBIDDEN
:
1193 return ("Forbidden");
1194 case HTTP_NOT_FOUND
:
1195 return ("Not Found");
1196 case HTTP_REQUEST_TOO_LARGE
:
1197 return ("Request Entity Too Large");
1198 case HTTP_URI_TOO_LONG
:
1199 return ("URI Too Long");
1200 case HTTP_NOT_IMPLEMENTED
:
1201 return ("Not Implemented");
1202 case HTTP_NOT_SUPPORTED
:
1203 return ("Not Supported");
1211 * 'httpGetDateString()' - Get a formatted date/time string from a time value.
1214 const char * /* O - Date/time string */
1215 httpGetDateString(time_t t
) /* I - UNIX time */
1218 static char datetime
[256];
1222 sprintf(datetime
, "%s, %02d %s %d %02d:%02d:%02d GMT",
1223 days
[tdate
->tm_wday
], tdate
->tm_mday
, months
[tdate
->tm_mon
],
1224 tdate
->tm_year
+ 1900, tdate
->tm_hour
, tdate
->tm_min
, tdate
->tm_sec
);
1231 * 'httpGetDateTime()' - Get a time value from a formatted date/time string.
1234 time_t /* O - UNIX time */
1235 httpGetDateTime(const char *s
) /* I - Date/time string */
1237 int i
; /* Looping var */
1238 struct tm tdate
; /* Time/date structure */
1239 char mon
[16]; /* Abbreviated month name */
1240 int day
, year
; /* Day of month and year */
1241 int hour
, min
, sec
; /* Time */
1244 if (sscanf(s
, "%*s%d%15s%d%d:%d:%d", &day
, mon
, &year
, &hour
, &min
, &sec
) < 6)
1247 for (i
= 0; i
< 12; i
++)
1248 if (strcasecmp(mon
, months
[i
]) == 0)
1255 tdate
.tm_mday
= day
;
1256 tdate
.tm_year
= year
- 1900;
1257 tdate
.tm_hour
= hour
;
1262 return (mktime(&tdate
));
1267 * 'httpUpdate()' - Update the current HTTP state for incoming data.
1270 http_status_t
/* O - HTTP status */
1271 httpUpdate(http_t
*http
) /* I - HTTP data */
1273 char line
[1024], /* Line from connection... */
1274 *value
; /* Pointer to value on line */
1275 http_field_t field
; /* Field index */
1276 int major
, minor
; /* HTTP version numbers */
1277 http_status_t status
; /* Authorization status */
1280 DEBUG_printf(("httpUpdate(%08x)\n", http
));
1283 * If we haven't issued any commands, then there is nothing to "update"...
1286 if (http
->state
== HTTP_WAITING
)
1287 return (HTTP_CONTINUE
);
1290 * Grab all of the lines we can from the connection...
1293 while (httpGets(line
, sizeof(line
), http
) != NULL
)
1297 if (line
[0] == '\0')
1300 * Blank line means the start of the data section (if any). Return
1301 * the result code, too...
1303 * If we get status 100 (HTTP_CONTINUE), then we *don't* change states.
1304 * Instead, we just return HTTP_CONTINUE to the caller and keep on
1308 if (http
->status
== HTTP_CONTINUE
)
1309 return (http
->status
);
1311 httpGetLength(http
);
1313 switch (http
->state
)
1317 case HTTP_POST_RECV
:
1323 http
->state
= HTTP_WAITING
;
1327 return (http
->status
);
1329 else if (strncmp(line
, "HTTP/", 5) == 0)
1332 * Got the beginning of a response...
1335 if (sscanf(line
, "HTTP/%d.%d%d", &major
, &minor
, (int *)&status
) != 3)
1336 return (HTTP_ERROR
);
1338 http
->version
= (http_version_t
)(major
* 100 + minor
);
1339 http
->status
= status
;
1341 else if ((value
= strchr(line
, ':')) != NULL
)
1348 while (isspace(*value
))
1352 * Be tolerants of servers that send unknown attribute fields...
1355 if ((field
= http_field(line
)) == HTTP_FIELD_UNKNOWN
)
1357 DEBUG_printf(("httpUpdate: unknown field %s seen!\n", line
));
1361 httpSetField(http
, field
, value
);
1365 http
->status
= HTTP_ERROR
;
1366 return (HTTP_ERROR
);
1371 * See if there was an error...
1376 http
->status
= HTTP_ERROR
;
1377 return (HTTP_ERROR
);
1381 * If we haven't already returned, then there is nothing new...
1384 return (HTTP_CONTINUE
);
1389 * 'httpDecode64()' - Base64-decode a string.
1392 char * /* O - Decoded string */
1393 httpDecode64(char *out
, /* I - String to write to */
1394 const char *in
) /* I - String to read from */
1396 int pos
, /* Bit position */
1397 base64
; /* Value of this character */
1398 char *outptr
; /* Output pointer */
1401 for (outptr
= out
, pos
= 0; *in
!= '\0'; in
++)
1404 * Decode this character into a number from 0 to 63...
1407 if (*in
>= 'A' && *in
<= 'Z')
1409 else if (*in
>= 'a' && *in
<= 'z')
1410 base64
= *in
- 'a' + 26;
1411 else if (*in
>= '0' && *in
<= '9')
1412 base64
= *in
- '0' + 52;
1413 else if (*in
== '+')
1415 else if (*in
== '/')
1417 else if (*in
== '=')
1423 * Store the result in the appropriate chars...
1429 *outptr
= base64
<< 2;
1433 *outptr
++ |= (base64
>> 4) & 3;
1434 *outptr
= (base64
<< 4) & 255;
1438 *outptr
++ |= (base64
>> 2) & 15;
1439 *outptr
= (base64
<< 6) & 255;
1443 *outptr
++ |= base64
;
1452 * Return the decoded string...
1460 * 'httpEncode64()' - Base64-encode a string.
1463 char * /* O - Encoded string */
1464 httpEncode64(char *out
, /* I - String to write to */
1465 const char *in
) /* I - String to read from */
1467 char *outptr
; /* Output pointer */
1468 static char base64
[] = /* Base64 characters... */
1470 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1471 "abcdefghijklmnopqrstuvwxyz"
1477 for (outptr
= out
; *in
!= '\0'; in
++)
1480 * Encode the up to 3 characters as 4 Base64 numbers...
1483 *outptr
++ = base64
[in
[0] >> 2];
1484 *outptr
++ = base64
[((in
[0] << 4) | (in
[1] >> 4)) & 63];
1493 *outptr
++ = base64
[((in
[0] << 2) | (in
[1] >> 6)) & 63];
1499 *outptr
++ = base64
[in
[0] & 63];
1506 * Return the encoded string...
1514 * 'httpGetLength()' - Get the amount of data remaining from the
1515 * content-length or transfer-encoding fields.
1518 int /* O - Content length */
1519 httpGetLength(http_t
*http
) /* I - HTTP data */
1521 DEBUG_printf(("httpGetLength(%08x)\n", http
));
1523 if (strcasecmp(http
->fields
[HTTP_FIELD_TRANSFER_ENCODING
], "chunked") == 0)
1525 DEBUG_puts("httpGetLength: chunked request!");
1527 http
->data_encoding
= HTTP_ENCODE_CHUNKED
;
1528 http
->data_remaining
= 0;
1532 http
->data_encoding
= HTTP_ENCODE_LENGTH
;
1535 * The following is a hack for HTTP servers that don't send a
1536 * content-length or transfer-encoding field...
1538 * If there is no content-length then the connection must close
1539 * after the transfer is complete...
1542 if (http
->fields
[HTTP_FIELD_CONTENT_LENGTH
][0] == '\0')
1543 http
->data_remaining
= 2147483647;
1545 http
->data_remaining
= atoi(http
->fields
[HTTP_FIELD_CONTENT_LENGTH
]);
1547 DEBUG_printf(("httpGetLength: content_length = %d\n", http
->data_remaining
));
1550 return (http
->data_remaining
);
1555 * 'http_field()' - Return the field index for a field name.
1558 static http_field_t
/* O - Field index */
1559 http_field(const char *name
) /* I - String name */
1561 int i
; /* Looping var */
1564 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
1565 if (strcasecmp(name
, http_fields
[i
]) == 0)
1566 return ((http_field_t
)i
);
1568 return (HTTP_FIELD_UNKNOWN
);
1573 * 'http_send()' - Send a request with all fields and the trailing blank line.
1576 static int /* O - 0 on success, non-zero on error */
1577 http_send(http_t
*http
, /* I - HTTP data */
1578 http_state_t request
, /* I - Request code */
1579 const char *uri
) /* I - URI */
1581 int i
; /* Looping var */
1582 char *ptr
, /* Pointer in buffer */
1583 buf
[1024]; /* Encoded URI buffer */
1584 static const char *codes
[] = /* Request code strings */
1600 static const char *hex
= "0123456789ABCDEF";
1604 if (http
== NULL
|| uri
== NULL
)
1608 * Encode the URI as needed...
1611 for (ptr
= buf
; *uri
!= '\0'; uri
++)
1612 if (*uri
<= ' ' || *uri
>= 127)
1615 *ptr
++ = hex
[(*uri
>> 4) & 15];
1616 *ptr
++ = hex
[*uri
& 15];
1624 * See if we had an error the last time around; if so, reconnect...
1627 if (http
->status
== HTTP_ERROR
|| http
->status
>= HTTP_BAD_REQUEST
)
1628 httpReconnect(http
);
1631 * Send the request header...
1634 http
->state
= request
;
1635 if (request
== HTTP_POST
|| request
== HTTP_PUT
)
1638 http
->status
= HTTP_CONTINUE
;
1640 if (httpPrintf(http
, "%s %s HTTP/1.1\r\n", codes
[request
], buf
) < 1)
1642 http
->status
= HTTP_ERROR
;
1646 for (i
= 0; i
< HTTP_FIELD_MAX
; i
++)
1647 if (http
->fields
[i
][0] != '\0')
1649 DEBUG_printf(("%s: %s\n", http_fields
[i
], http
->fields
[i
]));
1651 if (httpPrintf(http
, "%s: %s\r\n", http_fields
[i
], http
->fields
[i
]) < 1)
1653 http
->status
= HTTP_ERROR
;
1658 if (httpPrintf(http
, "\r\n") < 1)
1660 http
->status
= HTTP_ERROR
;
1664 httpClearFields(http
);
1671 * End of "$Id: http.c,v 1.66 2000/10/20 20:23:52 mike Exp $".