Annotation of libwww/Library/src/HTDialog.c, revision 2.16
2.1 frystyk 1: /* HTDialog.c
2: ** MESSAGES AND DIALOGS
3: **
4: ** (c) COPYRIGHT MIT 1995.
5: ** Please first read the full copyright statement in the file COPYRIGH.
2.16 ! frystyk 6: ** @(#) $Id: HTDialog.c,v 2.15 1996/07/02 22:54:19 frystyk Exp $
2.1 frystyk 7: **
8: ** This module provides a default implementation of the application part
9: ** of the Message and Dialog part or the Library. You do not have to do
10: ** it like this - you can use exactly the model for mapping codes into
11: ** messages as you like
12: **
13: ** Authors
14: ** HFN Henrik Frystyk
15: */
16:
17: /* Library include files */
18: #include "WWWLib.h"
19: #include "WWWApp.h"
2.6 frystyk 20: #include "WWWHTTP.h"
2.1 frystyk 21: #include "HTDialog.h" /* Implemented here */
22:
23: /*
24: ** Dialog Messages
25: */
26: PRIVATE char *HTDialogs[HT_MSG_ELEMENTS] = {
27: "Please enter username:",
28: "Password:",
29: "Please give name of file to save in:",
30: "Plase enter account:",
31: "It might not be allowed to use this method, continue?",
32: "Location has moved, continue?",
33: "A new set of rules is to be added to your setup - continue?"
34: };
35:
36: /*
37: ** All errors that are not strictly HTTP errors but originates from, e.g.,
38: ** the FTP protocol all have element numbers > HTERR_HTTP_CODES_END, i.e.,
39: ** they should be placed after the blank line
40: */
41: typedef struct _HTErrorMessage {
42: int code; /* Error number */
43: char * msg; /* Short explanation */
44: char * url; /* Explaning URL */
45: } HTErrorMessage;
46:
47: PRIVATE HTErrorMessage HTErrors[HTERR_ELEMENTS] = {
48:
49: /* CODE ERROR MESSAGE ERROR URL */
50:
2.15 frystyk 51: { 100, "Continue", "information" },
52: { 101, "Switching Protocols", "information" },
53: { 200, "OK", "success" },
54: { 201, "Created", "success" },
55: { 202, "Accepted", "success" },
56: { 203, "Non-authoritative Information", "success" },
57: { 204, "No Content", "success" },
58: { 205, "Reset Content", "success" },
59: { 206, "Partial Content", "success" },
60: { 300, "Multiple Choices", "redirection" },
61: { 301, "Moved Permanently", "redirection" },
62: { 302, "Moved Temporarily", "redirection" },
63: { 303, "See Other", "redirection" },
64: { 304, "Not Modified", "redirection" },
65: { 305, "Use Proxy", "redirection" },
66: { 400, "Bad Request", "client_error" },
67: { 401, "Unauthorized", "client_error" },
68: { 402, "Payment Required", "client_error" },
69: { 403, "Forbidden", "client_error" },
70: { 404, "Not Found", "client_error" },
71: { 405, "Method Not Allowed", "client_error" },
72: { 406, "Not Acceptable", "client_error" },
73: { 407, "Proxy Authentication Required", "client_error" },
74: { 408, "Request Timeout", "client_error" },
75: { 409, "Conflict", "client_error" },
76: { 410, "Gone", "client_error" },
77: { 411, "Length Required", "client_error" },
78: { 412, "Precondition Failed", "client_error" },
79: { 413, "Request Entity Too Large", "client_error" },
80: { 414, "Request-URI Too Large", "client_error" },
81: { 415, "Unsupported Media Type", "client_error" },
82: { 500, "Internal Server Error", "server_error" },
83: { 501, "Not Implemented", "server_error" },
84: { 502, "Bad Gateway", "server_error" },
85: { 503, "Service Unavailable", "server_error" },
86: { 504, "Gateway Timeout", "server_error" },
87: { 505, "HTTP Version not supported", "server_error" },
88:
89: /* Cache Warnings */
90: { 10, "Response is Stale", "cache" },
91: { 11, "Revalidation Failed", "cache" },
92: { 12, "Disconnected Opeartion", "cache" },
93: { 13, "Heuristic Expiration", "cache" },
94: { 14, "Transformation Applied", "cache" },
95: { 99, "Cache warning", "cache" },
96:
97: /* Non-HTTP Error codes and warnings */
98: { 0, "Can't locate remote host", "internal" },
99: { 0, "No host name found", "internal" },
100: { 0, "No file name found or file not accessible", "internal" },
101: { 0, "FTP-server replies", "internal" },
102: { 0, "FTP-server doesn't reply", "internal" },
103: { 0, "Server timed out", "internal" },
104: { 0, "Gopher-server replies", "internal" },
105: { 0, "Data transfer interrupted", "internal" },
106: { 0, "Connection establishment interrupted", "internal" },
107: { 0, "CSO-server replies", "internal" },
108: { 0, "This is probably a HTTP server 0.9 or less","internal" },
109: { 0, "Bad, Incomplete, or Unknown Response", "internal" },
110: { 0, "Unknown access authentication scheme", "internal" },
111: { 0, "News-server replies", "internal" },
112: { 0, "Trying `ftp://' instead of `file://'", "internal" },
113: { 0, "Too many redirections", "internal" },
2.16 ! frystyk 114: { 0, "Method not suited for automatic redirection","internal" },
2.15 frystyk 115: { 0, "Premature End Of File", "internal" },
116: { 0, "Response from WAIS Server too Large - Extra lines ignored","internal"},
117: { 0, "WAIS-server doesn't return any data", "internal" },
118: { 0, "Can't connect to WAIS-server", "internal" },
119: { 0, "System replies", "internal" },
120: { 0, "Wrong or unknown access scheme", "internal" },
121: { 0, "Access scheme not allowed in this context", "internal" },
122: { 0, "When you are connected, you can log in", "internal" }
2.1 frystyk 123: };
124:
125: /* ------------------------------------------------------------------------- */
126:
127: PUBLIC BOOL HTProgress (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 128: int msgnum, const char * dfault, void * input,
2.1 frystyk 129: HTAlertPar * reply)
130: {
131: if (!request) {
2.8 eric 132: if (WWWTRACE) HTTrace("HTProgress.. Bad argument\n");
2.1 frystyk 133: return NO;
134: }
135: switch (op) {
136: case HT_PROG_DNS:
2.9 frystyk 137: HTTrace("Looking up %s\n", input ? (char *) input : "");
2.1 frystyk 138: break;
139:
140: case HT_PROG_CONNECT:
2.9 frystyk 141: HTTrace("Contacting %s\n", input ? (char *) input : "");
2.1 frystyk 142: break;
143:
144: case HT_PROG_ACCEPT:
2.8 eric 145: HTTrace("Waiting for connection...\n");
2.1 frystyk 146: break;
147:
148: case HT_PROG_READ:
149: {
150: long cl = HTAnchor_length(HTRequest_anchor(request));
151: if (cl > 0) {
152: long b_read = HTRequest_bytesRead(request);
153: double pro = (double) b_read/cl*100;
154: char buf[10];
155: HTNumToStr((unsigned long) cl, buf, 10);
2.8 eric 156: HTTrace("Read (%d%% of %s)\n", (int) pro, buf);
2.1 frystyk 157: } else
2.8 eric 158: HTTrace("Reading...\n");
2.1 frystyk 159: }
160: break;
161:
162: case HT_PROG_WRITE:
2.4 frystyk 163: if (HTRequest_isPostWeb(request)) {
164: HTParentAnchor *anchor=HTRequest_anchor(HTRequest_source(request));
165: long cl = HTAnchor_length(anchor);
166: if (cl > 0) {
167: long b_write = HTRequest_bytesWritten(request);
168: double pro = (double) b_write/cl*100;
169: char buf[10];
170: HTNumToStr((unsigned long) cl, buf, 10);
2.8 eric 171: HTTrace("Written (%d%% of %s)\n", (int) pro, buf);
2.4 frystyk 172: } else
2.8 eric 173: HTTrace("Writing...\n");
2.4 frystyk 174: }
2.1 frystyk 175: break;
176:
177: case HT_PROG_DONE:
2.8 eric 178: HTTrace("Finished\n");
2.1 frystyk 179: break;
180:
181: case HT_PROG_WAIT:
2.12 frystyk 182: HTTrace("Waiting for free socket...\n");
2.1 frystyk 183: break;
184:
185: default:
2.8 eric 186: HTTrace("UNKNOWN PROGRESS STATE\n");
2.1 frystyk 187: break;
188: }
189: return YES;
190: }
191:
192: PUBLIC BOOL HTConfirm (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 193: int msgnum, const char * dfault, void * input,
2.1 frystyk 194: HTAlertPar * reply)
195: {
196: char response[4]; /* One more for terminating NULL -- AL */
2.8 eric 197: HTTrace("%s", HTDialogs[msgnum]);
198: if (input) HTTrace(" (%s)", (char *) input);
199: HTTrace(" (y/n) ");
2.1 frystyk 200: #ifndef NO_STDIO
2.2 frystyk 201: if (fgets(response, 4, stdin)) /* get reply, max 3 chars */
2.1 frystyk 202: #endif
2.2 frystyk 203: {
2.1 frystyk 204: char *ptr = response;
205: while (*ptr) {
206: if (*ptr == '\n') {
207: *ptr = '\0';
208: break;
209: }
210: *ptr = TOUPPER(*ptr);
211: ptr++;
212: }
213: return (!strcmp(response, "YES") || !strcmp(response, "Y")) ? YES : NO;
214: }
215: return NO;
216: }
217:
218: /* Prompt for answer and get text back. Reply text is either NULL on
2.10 frystyk 219: ** error or a dynamic string which the caller must HT_FREE.
2.1 frystyk 220: */
221: PUBLIC BOOL HTPrompt (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 222: int msgnum, const char * dfault, void * input,
2.1 frystyk 223: HTAlertPar * reply)
224: {
2.8 eric 225: HTTrace("%s ", HTDialogs[msgnum]);
226: if (input) HTTrace(" (%s) ", (char *) input);
227: if (dfault) HTTrace("(RETURN for [%s]) ", (char *) dfault);
2.1 frystyk 228: if (reply && msgnum>=0) {
229: #ifndef NO_STDIO
2.5 frystyk 230: char buffer[200];
2.1 frystyk 231: if (!fgets(buffer, 200, stdin)) return NO;
232: buffer[strlen(buffer)-1] = '\0'; /* Overwrite newline */
233: if (*buffer)
234: HTAlert_setReplyMessage(reply, buffer);
235: else if (dfault)
236: HTAlert_setReplyMessage(reply, (char *) dfault);
237: else
238: return NO;
239: return YES;
240: #endif
241: }
242: return NO;
243: }
244:
245: /* Prompt for password without echoing the reply. Reply text is
2.10 frystyk 246: ** either NULL on error or a dynamic string which the caller must HT_FREE.
2.1 frystyk 247: */
248: PUBLIC BOOL HTPromptPassword (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 249: int msgnum, const char * dfault, void * input,
2.1 frystyk 250: HTAlertPar * reply)
251: {
252: if (reply && msgnum>=0) {
2.10 frystyk 253: #ifdef HAVE_GETPASS
2.1 frystyk 254: char * pw = (char *) getpass(HTDialogs[msgnum]);
2.2 frystyk 255: if (pw) HTAlert_setReplySecret(reply, pw);
2.1 frystyk 256: return YES;
2.10 frystyk 257: #else
2.11 eric 258: return NO; /* needed for WWW_MSWINDOWS */
2.10 frystyk 259: #endif /* HAVE_GETPASS */
2.1 frystyk 260: }
261: return NO;
262: }
263:
264: /* Username and password
265: ** ---------------------
266: ** Prompt Username and password as an atomic operation
267: */
268: PUBLIC BOOL HTPromptUsernameAndPassword (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 269: int msgnum, const char * dfault,
2.1 frystyk 270: void * input, HTAlertPar * reply)
271: {
272: BOOL status = HTPrompt(request, op, HT_MSG_UID, dfault, input, reply);
273: return status ?
274: HTPromptPassword(request, op, HT_MSG_PW, dfault, input, reply) : NO;
275: }
276:
277: /* HTError_print
278: ** -------------
279: ** Default function that creates an error message using HTAlert() to
280: ** put out the contents of the error_stack messages. Furthermore, the
281: ** error_info structure contains a name of a help file that might be put
282: ** up as a link. This file can then be multi-linguistic.
283: */
284: PUBLIC BOOL HTError_print (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 285: int msgnum, const char * dfault, void * input,
2.1 frystyk 286: HTAlertPar * reply)
287: {
288: HTList *cur = (HTList *) input;
289: HTError *pres;
290: HTErrorShow showmask = HTError_show();
291: HTChunk *msg = NULL;
292: int code;
2.8 eric 293: if (WWWTRACE) HTTrace("HTError..... Generating message\n");
2.1 frystyk 294: if (!request || !cur) return NO;
295: while ((pres = (HTError *) HTList_nextObject(cur))) {
296: int index = HTError_index(pres);
297: if (HTError_doShow(pres)) {
298: if (!msg) {
299: HTSeverity severity = HTError_severity(pres);
2.3 frystyk 300: msg = HTChunk_new(128);
2.1 frystyk 301: if (severity == ERR_WARN)
2.3 frystyk 302: HTChunk_puts(msg, "Warning: ");
2.1 frystyk 303: else if (severity == ERR_NON_FATAL)
2.3 frystyk 304: HTChunk_puts(msg, "Non Fatal Error: ");
2.1 frystyk 305: else if (severity == ERR_FATAL)
2.3 frystyk 306: HTChunk_puts(msg, "Fatal Error: ");
2.1 frystyk 307: else if (severity == ERR_INFO)
2.3 frystyk 308: HTChunk_puts(msg, "Information: ");
2.1 frystyk 309: else {
310: if (WWWTRACE)
2.8 eric 311: HTTrace("HTError..... Unknown Classification of Error (%d)...\n", severity);
2.3 frystyk 312: HTChunk_delete(msg);
2.1 frystyk 313: return NO;
314: }
315:
316: /* Error number */
317: if ((code = HTErrors[index].code) > 0) {
318: char buf[10];
319: sprintf(buf, "%d ", code);
2.3 frystyk 320: HTChunk_puts(msg, buf);
2.1 frystyk 321: }
322: } else
2.3 frystyk 323: HTChunk_puts(msg, "\nReason: ");
324: HTChunk_puts(msg, HTErrors[index].msg); /* Error message */
2.1 frystyk 325:
326: if (showmask & HT_ERR_SHOW_PARS) { /* Error parameters */
327: int length;
328: int cnt;
329: char *pars = (char *) HTError_parameter(pres, &length);
330: if (length && pars) {
2.3 frystyk 331: HTChunk_puts(msg, " (");
2.1 frystyk 332: for (cnt=0; cnt<length; cnt++) {
333: char ch = *(pars+cnt);
334: if (ch < 0x20 || ch >= 0x7F)
2.3 frystyk 335: HTChunk_putc(msg, '#');
2.1 frystyk 336: else
2.3 frystyk 337: HTChunk_putc(msg, ch);
2.1 frystyk 338: }
2.3 frystyk 339: HTChunk_puts(msg, ") ");
2.1 frystyk 340: }
341: }
342:
343: if (showmask & HT_ERR_SHOW_LOCATION) { /* Error Location */
2.3 frystyk 344: HTChunk_puts(msg, "This occured in ");
345: HTChunk_puts(msg, HTError_location(pres));
346: HTChunk_putc(msg, '\n');
2.1 frystyk 347: }
348:
349: /*
350: ** Make sure that we don't get this error more than once even
351: ** if we are keeping the error stack from one request to another
352: */
353: HTError_setIgnore(pres);
354:
355: /* If we only are show the most recent entry then break here */
356: if (showmask & HT_ERR_SHOW_FIRST)
357: break;
358: }
359: }
360: if (msg) {
2.3 frystyk 361: HTChunk_putc(msg, '\n');
2.8 eric 362: HTTrace("WARNING: %s\n", HTChunk_data(msg));
2.3 frystyk 363: HTChunk_delete(msg);
2.1 frystyk 364: }
365: return YES;
366: }
367:
2.6 frystyk 368: /* HTError_response
369: ** ----------------
370: ** Default function that creates an error message using HTAlert() to
371: ** put out the contents of the error_stack messages. Furthermore, the
372: ** error_info structure contains a name of a help file that might be put
373: ** up as a link. This file can then be multi-linguistic.
374: */
375: PUBLIC BOOL HTError_response (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 376: int msgnum, const char * dfault, void * input,
2.6 frystyk 377: HTAlertPar * reply)
378: {
379: HTList * cur = (HTList *) input;
380: HTError * pres;
381: HTErrorShow showmask = HTError_show();
382: HTChunk * msg = NULL;
383: int code;
2.8 eric 384: if (WWWTRACE) HTTrace("HTError..... Generating HTTP response\n");
2.6 frystyk 385: if (!request || !cur || !reply) return NO;
386: while ((pres = (HTError *) HTList_nextObject(cur))) {
387: int index = HTError_index(pres);
388: if (HTError_doShow(pres)) {
389: if (!msg) {
390: msg = HTChunk_new(128);
391: if ((code = HTErrors[index].code) > 0) {
392: char * reason = HTErrors[index].msg;
2.7 frystyk 393: char * buf;
394: if ((buf = (char *) HT_MALLOC(20 + strlen(reason))) == NULL)
395: HT_OUTOFMEM("HTError_response");
2.6 frystyk 396: sprintf(buf,"%s %d %s%c%c",HTTP_VERSION,code,reason,CR,LF);
397: HTAlert_assignReplyMessage(reply, buf);
398: }
399: } else {
400: HTChunk_puts(msg, "\nReason: ");
401: HTChunk_puts(msg, HTErrors[index].msg); /* Error message */
402: }
403:
404: if (showmask & HT_ERR_SHOW_PARS) { /* Error parameters */
405: int length;
406: int cnt;
407: char *pars = (char *) HTError_parameter(pres, &length);
408: if (length && pars) {
409: HTChunk_puts(msg, " (");
410: for (cnt=0; cnt<length; cnt++) {
411: char ch = *(pars+cnt);
412: if (ch < 0x20 || ch >= 0x7F)
413: HTChunk_putc(msg, '#');
414: else
415: HTChunk_putc(msg, ch);
416: }
417: HTChunk_puts(msg, ") ");
418: }
419: }
420:
421: if (showmask & HT_ERR_SHOW_LOCATION) { /* Error Location */
422: HTChunk_puts(msg, "This occured in ");
423: HTChunk_puts(msg, HTError_location(pres));
424: HTChunk_putc(msg, '\n');
425: }
426:
427: /*
428: ** Make sure that we don't get this error more than once even
429: ** if we are keeping the error stack from one request to another
430: */
431: HTError_setIgnore(pres);
432:
433: /* If we only are show the most recent entry then break here */
434: if (showmask & HT_ERR_SHOW_FIRST)
435: break;
436: }
437: }
438: if (msg) {
439: HTChunk_putc(msg, '\n');
440: #if 0
2.8 eric 441: HTTrace("WARNING: %s\n", HTChunk_data(msg));
2.6 frystyk 442: #endif
443: HTChunk_delete(msg);
444: }
445: return YES;
446: }
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