Annotation of libwww/Library/src/HTDialog.c, revision 2.20
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.
2.20 ! frystyk 6: ** @(#) $Id: HTDialog.c,v 2.19 1996/08/05 17:22:14 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: */
2.18 frystyk 26: PRIVATE const char * HTDialogs[HT_MSG_ELEMENTS] = {
2.1 frystyk 27: "Please enter username:",
2.20 ! frystyk 28: "Please enter username for proxy authentication:",
2.1 frystyk 29: "Password:",
30: "Please give name of file to save in:",
31: "Plase enter account:",
2.19 frystyk 32: "You might not be allowed to use this method here, continue?",
2.1 frystyk 33: "Location has moved, continue?",
2.17 frystyk 34: "A new set of rules is to be added to your setup - continue?",
35: "This file already exists - replace existing file?",
2.18 frystyk 36: "Authentication failed - retry?",
2.19 frystyk 37: "Proxy authentication failed - retry?",
2.18 frystyk 38: "This method has already been performed - repeat operation?",
39: "This document is very big - continue operation?",
40: "The source document for this operation has moved - continue operation with new location?",
41: "The destination document for this operation has moved - continue operation with new location?",
2.19 frystyk 42: "A redirection may change the behavior of this method - proceed anyway?"
2.1 frystyk 43: };
44:
45: /*
46: ** All errors that are not strictly HTTP errors but originates from, e.g.,
47: ** the FTP protocol all have element numbers > HTERR_HTTP_CODES_END, i.e.,
48: ** they should be placed after the blank line
49: */
50: typedef struct _HTErrorMessage {
51: int code; /* Error number */
52: char * msg; /* Short explanation */
53: char * url; /* Explaning URL */
54: } HTErrorMessage;
55:
56: PRIVATE HTErrorMessage HTErrors[HTERR_ELEMENTS] = {
57:
58: /* CODE ERROR MESSAGE ERROR URL */
59:
2.15 frystyk 60: { 100, "Continue", "information" },
61: { 101, "Switching Protocols", "information" },
62: { 200, "OK", "success" },
63: { 201, "Created", "success" },
64: { 202, "Accepted", "success" },
65: { 203, "Non-authoritative Information", "success" },
66: { 204, "No Content", "success" },
67: { 205, "Reset Content", "success" },
68: { 206, "Partial Content", "success" },
69: { 300, "Multiple Choices", "redirection" },
70: { 301, "Moved Permanently", "redirection" },
71: { 302, "Moved Temporarily", "redirection" },
72: { 303, "See Other", "redirection" },
73: { 304, "Not Modified", "redirection" },
74: { 305, "Use Proxy", "redirection" },
75: { 400, "Bad Request", "client_error" },
76: { 401, "Unauthorized", "client_error" },
77: { 402, "Payment Required", "client_error" },
78: { 403, "Forbidden", "client_error" },
79: { 404, "Not Found", "client_error" },
80: { 405, "Method Not Allowed", "client_error" },
81: { 406, "Not Acceptable", "client_error" },
82: { 407, "Proxy Authentication Required", "client_error" },
83: { 408, "Request Timeout", "client_error" },
84: { 409, "Conflict", "client_error" },
85: { 410, "Gone", "client_error" },
86: { 411, "Length Required", "client_error" },
87: { 412, "Precondition Failed", "client_error" },
88: { 413, "Request Entity Too Large", "client_error" },
89: { 414, "Request-URI Too Large", "client_error" },
90: { 415, "Unsupported Media Type", "client_error" },
91: { 500, "Internal Server Error", "server_error" },
92: { 501, "Not Implemented", "server_error" },
93: { 502, "Bad Gateway", "server_error" },
94: { 503, "Service Unavailable", "server_error" },
95: { 504, "Gateway Timeout", "server_error" },
96: { 505, "HTTP Version not supported", "server_error" },
97:
98: /* Cache Warnings */
99: { 10, "Response is Stale", "cache" },
100: { 11, "Revalidation Failed", "cache" },
101: { 12, "Disconnected Opeartion", "cache" },
102: { 13, "Heuristic Expiration", "cache" },
103: { 14, "Transformation Applied", "cache" },
104: { 99, "Cache warning", "cache" },
105:
106: /* Non-HTTP Error codes and warnings */
107: { 0, "Can't locate remote host", "internal" },
108: { 0, "No host name found", "internal" },
109: { 0, "No file name found or file not accessible", "internal" },
110: { 0, "FTP-server replies", "internal" },
111: { 0, "FTP-server doesn't reply", "internal" },
112: { 0, "Server timed out", "internal" },
113: { 0, "Gopher-server replies", "internal" },
114: { 0, "Data transfer interrupted", "internal" },
115: { 0, "Connection establishment interrupted", "internal" },
116: { 0, "CSO-server replies", "internal" },
117: { 0, "This is probably a HTTP server 0.9 or less","internal" },
118: { 0, "Bad, Incomplete, or Unknown Response", "internal" },
119: { 0, "Unknown access authentication scheme", "internal" },
120: { 0, "News-server replies", "internal" },
121: { 0, "Trying `ftp://' instead of `file://'", "internal" },
122: { 0, "Too many redirections", "internal" },
2.16 frystyk 123: { 0, "Method not suited for automatic redirection","internal" },
2.15 frystyk 124: { 0, "Premature End Of File", "internal" },
125: { 0, "Response from WAIS Server too Large - Extra lines ignored","internal"},
126: { 0, "WAIS-server doesn't return any data", "internal" },
127: { 0, "Can't connect to WAIS-server", "internal" },
128: { 0, "System replies", "internal" },
129: { 0, "Wrong or unknown access scheme", "internal" },
130: { 0, "Access scheme not allowed in this context", "internal" },
131: { 0, "When you are connected, you can log in", "internal" }
2.1 frystyk 132: };
133:
134: /* ------------------------------------------------------------------------- */
135:
136: PUBLIC BOOL HTProgress (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 137: int msgnum, const char * dfault, void * input,
2.1 frystyk 138: HTAlertPar * reply)
139: {
2.19 frystyk 140: if (!request || HTRequest_internal(request)) return NO;
2.1 frystyk 141: switch (op) {
142: case HT_PROG_DNS:
2.9 frystyk 143: HTTrace("Looking up %s\n", input ? (char *) input : "");
2.1 frystyk 144: break;
145:
146: case HT_PROG_CONNECT:
2.9 frystyk 147: HTTrace("Contacting %s\n", input ? (char *) input : "");
2.1 frystyk 148: break;
149:
150: case HT_PROG_ACCEPT:
2.8 eric 151: HTTrace("Waiting for connection...\n");
2.1 frystyk 152: break;
153:
154: case HT_PROG_READ:
155: {
156: long cl = HTAnchor_length(HTRequest_anchor(request));
157: if (cl > 0) {
158: long b_read = HTRequest_bytesRead(request);
159: double pro = (double) b_read/cl*100;
160: char buf[10];
161: HTNumToStr((unsigned long) cl, buf, 10);
2.8 eric 162: HTTrace("Read (%d%% of %s)\n", (int) pro, buf);
2.1 frystyk 163: } else
2.8 eric 164: HTTrace("Reading...\n");
2.1 frystyk 165: }
166: break;
167:
168: case HT_PROG_WRITE:
2.4 frystyk 169: if (HTRequest_isPostWeb(request)) {
170: HTParentAnchor *anchor=HTRequest_anchor(HTRequest_source(request));
171: long cl = HTAnchor_length(anchor);
172: if (cl > 0) {
173: long b_write = HTRequest_bytesWritten(request);
174: double pro = (double) b_write/cl*100;
175: char buf[10];
176: HTNumToStr((unsigned long) cl, buf, 10);
2.8 eric 177: HTTrace("Written (%d%% of %s)\n", (int) pro, buf);
2.4 frystyk 178: } else
2.8 eric 179: HTTrace("Writing...\n");
2.4 frystyk 180: }
2.1 frystyk 181: break;
182:
183: case HT_PROG_DONE:
2.8 eric 184: HTTrace("Finished\n");
2.1 frystyk 185: break;
186:
187: case HT_PROG_WAIT:
2.12 frystyk 188: HTTrace("Waiting for free socket...\n");
2.1 frystyk 189: break;
190:
191: default:
2.8 eric 192: HTTrace("UNKNOWN PROGRESS STATE\n");
2.1 frystyk 193: break;
194: }
195: return YES;
196: }
197:
198: PUBLIC BOOL HTConfirm (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 199: int msgnum, const char * dfault, void * input,
2.1 frystyk 200: HTAlertPar * reply)
201: {
202: char response[4]; /* One more for terminating NULL -- AL */
2.8 eric 203: HTTrace("%s", HTDialogs[msgnum]);
204: if (input) HTTrace(" (%s)", (char *) input);
205: HTTrace(" (y/n) ");
2.1 frystyk 206: #ifndef NO_STDIO
2.2 frystyk 207: if (fgets(response, 4, stdin)) /* get reply, max 3 chars */
2.1 frystyk 208: #endif
2.2 frystyk 209: {
2.1 frystyk 210: char *ptr = response;
211: while (*ptr) {
212: if (*ptr == '\n') {
213: *ptr = '\0';
214: break;
215: }
216: *ptr = TOUPPER(*ptr);
217: ptr++;
218: }
219: return (!strcmp(response, "YES") || !strcmp(response, "Y")) ? YES : NO;
220: }
221: return NO;
222: }
223:
224: /* Prompt for answer and get text back. Reply text is either NULL on
2.10 frystyk 225: ** error or a dynamic string which the caller must HT_FREE.
2.1 frystyk 226: */
227: PUBLIC BOOL HTPrompt (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 228: int msgnum, const char * dfault, void * input,
2.1 frystyk 229: HTAlertPar * reply)
230: {
2.8 eric 231: HTTrace("%s ", HTDialogs[msgnum]);
232: if (input) HTTrace(" (%s) ", (char *) input);
233: if (dfault) HTTrace("(RETURN for [%s]) ", (char *) dfault);
2.1 frystyk 234: if (reply && msgnum>=0) {
235: #ifndef NO_STDIO
2.5 frystyk 236: char buffer[200];
2.1 frystyk 237: if (!fgets(buffer, 200, stdin)) return NO;
238: buffer[strlen(buffer)-1] = '\0'; /* Overwrite newline */
239: if (*buffer)
240: HTAlert_setReplyMessage(reply, buffer);
241: else if (dfault)
242: HTAlert_setReplyMessage(reply, (char *) dfault);
243: else
244: return NO;
245: return YES;
246: #endif
247: }
248: return NO;
249: }
250:
251: /* Prompt for password without echoing the reply. Reply text is
2.10 frystyk 252: ** either NULL on error or a dynamic string which the caller must HT_FREE.
2.1 frystyk 253: */
254: PUBLIC BOOL HTPromptPassword (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 255: int msgnum, const char * dfault, void * input,
2.1 frystyk 256: HTAlertPar * reply)
257: {
258: if (reply && msgnum>=0) {
2.10 frystyk 259: #ifdef HAVE_GETPASS
2.1 frystyk 260: char * pw = (char *) getpass(HTDialogs[msgnum]);
2.2 frystyk 261: if (pw) HTAlert_setReplySecret(reply, pw);
2.1 frystyk 262: return YES;
2.10 frystyk 263: #else
2.11 eric 264: return NO; /* needed for WWW_MSWINDOWS */
2.10 frystyk 265: #endif /* HAVE_GETPASS */
2.1 frystyk 266: }
267: return NO;
268: }
269:
270: /* Username and password
271: ** ---------------------
272: ** Prompt Username and password as an atomic operation
273: */
274: PUBLIC BOOL HTPromptUsernameAndPassword (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 275: int msgnum, const char * dfault,
2.1 frystyk 276: void * input, HTAlertPar * reply)
277: {
278: BOOL status = HTPrompt(request, op, HT_MSG_UID, dfault, input, reply);
279: return status ?
280: HTPromptPassword(request, op, HT_MSG_PW, dfault, input, reply) : NO;
281: }
282:
283: /* HTError_print
284: ** -------------
285: ** Default function that creates an error message using HTAlert() to
286: ** put out the contents of the error_stack messages. Furthermore, the
287: ** error_info structure contains a name of a help file that might be put
288: ** up as a link. This file can then be multi-linguistic.
289: */
290: PUBLIC BOOL HTError_print (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 291: int msgnum, const char * dfault, void * input,
2.1 frystyk 292: HTAlertPar * reply)
293: {
294: HTList *cur = (HTList *) input;
295: HTError *pres;
296: HTErrorShow showmask = HTError_show();
297: HTChunk *msg = NULL;
298: int code;
2.8 eric 299: if (WWWTRACE) HTTrace("HTError..... Generating message\n");
2.1 frystyk 300: if (!request || !cur) return NO;
301: while ((pres = (HTError *) HTList_nextObject(cur))) {
302: int index = HTError_index(pres);
303: if (HTError_doShow(pres)) {
304: if (!msg) {
305: HTSeverity severity = HTError_severity(pres);
2.3 frystyk 306: msg = HTChunk_new(128);
2.1 frystyk 307: if (severity == ERR_WARN)
2.3 frystyk 308: HTChunk_puts(msg, "Warning: ");
2.1 frystyk 309: else if (severity == ERR_NON_FATAL)
2.3 frystyk 310: HTChunk_puts(msg, "Non Fatal Error: ");
2.1 frystyk 311: else if (severity == ERR_FATAL)
2.3 frystyk 312: HTChunk_puts(msg, "Fatal Error: ");
2.1 frystyk 313: else if (severity == ERR_INFO)
2.3 frystyk 314: HTChunk_puts(msg, "Information: ");
2.1 frystyk 315: else {
316: if (WWWTRACE)
2.8 eric 317: HTTrace("HTError..... Unknown Classification of Error (%d)...\n", severity);
2.3 frystyk 318: HTChunk_delete(msg);
2.1 frystyk 319: return NO;
320: }
321:
322: /* Error number */
323: if ((code = HTErrors[index].code) > 0) {
324: char buf[10];
325: sprintf(buf, "%d ", code);
2.3 frystyk 326: HTChunk_puts(msg, buf);
2.1 frystyk 327: }
328: } else
2.3 frystyk 329: HTChunk_puts(msg, "\nReason: ");
330: HTChunk_puts(msg, HTErrors[index].msg); /* Error message */
2.1 frystyk 331:
332: if (showmask & HT_ERR_SHOW_PARS) { /* Error parameters */
333: int length;
334: int cnt;
335: char *pars = (char *) HTError_parameter(pres, &length);
336: if (length && pars) {
2.3 frystyk 337: HTChunk_puts(msg, " (");
2.1 frystyk 338: for (cnt=0; cnt<length; cnt++) {
339: char ch = *(pars+cnt);
340: if (ch < 0x20 || ch >= 0x7F)
2.3 frystyk 341: HTChunk_putc(msg, '#');
2.1 frystyk 342: else
2.3 frystyk 343: HTChunk_putc(msg, ch);
2.1 frystyk 344: }
2.3 frystyk 345: HTChunk_puts(msg, ") ");
2.1 frystyk 346: }
347: }
348:
349: if (showmask & HT_ERR_SHOW_LOCATION) { /* Error Location */
2.3 frystyk 350: HTChunk_puts(msg, "This occured in ");
351: HTChunk_puts(msg, HTError_location(pres));
352: HTChunk_putc(msg, '\n');
2.1 frystyk 353: }
354:
355: /*
356: ** Make sure that we don't get this error more than once even
357: ** if we are keeping the error stack from one request to another
358: */
359: HTError_setIgnore(pres);
360:
361: /* If we only are show the most recent entry then break here */
362: if (showmask & HT_ERR_SHOW_FIRST)
363: break;
364: }
365: }
366: if (msg) {
2.3 frystyk 367: HTChunk_putc(msg, '\n');
2.8 eric 368: HTTrace("WARNING: %s\n", HTChunk_data(msg));
2.3 frystyk 369: HTChunk_delete(msg);
2.1 frystyk 370: }
371: return YES;
372: }
373:
2.6 frystyk 374: /* HTError_response
375: ** ----------------
376: ** Default function that creates an error message using HTAlert() to
377: ** put out the contents of the error_stack messages. Furthermore, the
378: ** error_info structure contains a name of a help file that might be put
379: ** up as a link. This file can then be multi-linguistic.
380: */
381: PUBLIC BOOL HTError_response (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 382: int msgnum, const char * dfault, void * input,
2.6 frystyk 383: HTAlertPar * reply)
384: {
385: HTList * cur = (HTList *) input;
386: HTError * pres;
387: HTErrorShow showmask = HTError_show();
388: HTChunk * msg = NULL;
389: int code;
2.8 eric 390: if (WWWTRACE) HTTrace("HTError..... Generating HTTP response\n");
2.6 frystyk 391: if (!request || !cur || !reply) return NO;
392: while ((pres = (HTError *) HTList_nextObject(cur))) {
393: int index = HTError_index(pres);
394: if (HTError_doShow(pres)) {
395: if (!msg) {
396: msg = HTChunk_new(128);
397: if ((code = HTErrors[index].code) > 0) {
398: char * reason = HTErrors[index].msg;
2.7 frystyk 399: char * buf;
400: if ((buf = (char *) HT_MALLOC(20 + strlen(reason))) == NULL)
401: HT_OUTOFMEM("HTError_response");
2.6 frystyk 402: sprintf(buf,"%s %d %s%c%c",HTTP_VERSION,code,reason,CR,LF);
403: HTAlert_assignReplyMessage(reply, buf);
404: }
405: } else {
406: HTChunk_puts(msg, "\nReason: ");
407: HTChunk_puts(msg, HTErrors[index].msg); /* Error message */
408: }
409:
410: if (showmask & HT_ERR_SHOW_PARS) { /* Error parameters */
411: int length;
412: int cnt;
413: char *pars = (char *) HTError_parameter(pres, &length);
414: if (length && pars) {
415: HTChunk_puts(msg, " (");
416: for (cnt=0; cnt<length; cnt++) {
417: char ch = *(pars+cnt);
418: if (ch < 0x20 || ch >= 0x7F)
419: HTChunk_putc(msg, '#');
420: else
421: HTChunk_putc(msg, ch);
422: }
423: HTChunk_puts(msg, ") ");
424: }
425: }
426:
427: if (showmask & HT_ERR_SHOW_LOCATION) { /* Error Location */
428: HTChunk_puts(msg, "This occured in ");
429: HTChunk_puts(msg, HTError_location(pres));
430: HTChunk_putc(msg, '\n');
431: }
432:
433: /*
434: ** Make sure that we don't get this error more than once even
435: ** if we are keeping the error stack from one request to another
436: */
437: HTError_setIgnore(pres);
438:
439: /* If we only are show the most recent entry then break here */
440: if (showmask & HT_ERR_SHOW_FIRST)
441: break;
442: }
443: }
444: if (msg) {
445: HTChunk_putc(msg, '\n');
446: #if 0
2.8 eric 447: HTTrace("WARNING: %s\n", HTChunk_data(msg));
2.6 frystyk 448: #endif
449: HTChunk_delete(msg);
450: }
451: return YES;
452: }
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