Annotation of libwww/Library/src/HTProt.c, revision 2.12
2.1 frystyk 1: /* HTProt.c
2: ** ACCESS SCHEME MANAGER
3: **
4: ** (c) COPYRIGHT MIT 1995.
5: ** Please first read the full copyright statement in the file COPYRIGH.
6: **
7: **
8: ** HISTORY:
9: ** 6 July 95 HFN Spawned off from HTAccess
10: */
11:
12: /* Library Include files */
13: #include "tcp.h"
14: #include "HTUtils.h"
2.5 frystyk 15: #include "HTString.h"
2.1 frystyk 16: #include "HTParse.h"
17: #include "HTString.h"
18: #include "HTProt.h" /* Implemented here */
19:
20: /* Variables and typedefs local to this module */
2.5 frystyk 21: struct _HTProtocol {
22: char * name;
2.11 frystyk 23: BOOL preemptive;
2.10 frystyk 24: HTEventCallback * client;
25: HTEventCallback * server;
2.5 frystyk 26: };
27:
2.1 frystyk 28: PRIVATE HTList * protocols = NULL; /* List of registered protocols */
29:
30: /* --------------------------------------------------------------------------*/
31: /* Management of the HTProtocol structure */
32: /* --------------------------------------------------------------------------*/
33:
34: /*
2.3 frystyk 35: ** Register a Protocol module as an active access method
2.1 frystyk 36: */
2.5 frystyk 37: PUBLIC BOOL HTProtocol_add (CONST char * name,
2.11 frystyk 38: BOOL preemptive,
2.10 frystyk 39: HTEventCallback * client,
40: HTEventCallback * server)
2.1 frystyk 41: {
2.10 frystyk 42: if (name && (client || server)) {
2.12 ! frystyk 43: HTProtocol *newProt;
! 44: if ((newProt = (HTProtocol *) HT_CALLOC(1, sizeof(HTProtocol))) == NULL)
! 45: HT_OUTOFMEM("HTProtocol_add");
2.5 frystyk 46: StrAllocCopy(newProt->name, name);
2.9 frystyk 47: {
48: char *ptr = newProt->name;
49: while ((*ptr = TOLOWER(*ptr))) ptr++;
50: }
2.11 frystyk 51: newProt->preemptive = preemptive;
2.10 frystyk 52: newProt->client = client;
53: newProt->server = server;
2.5 frystyk 54: if (!protocols) protocols = HTList_new();
55: return HTList_addObject(protocols, (void *) newProt);
56: }
57: return NO;
2.1 frystyk 58: }
59:
2.3 frystyk 60: /*
61: ** Deletes a Protocol module as an active access method
62: */
2.5 frystyk 63: PUBLIC BOOL HTProtocol_delete (CONST char * name)
2.3 frystyk 64: {
2.5 frystyk 65: if (protocols) {
66: HTList *cur = protocols;
67: HTProtocol *pres;
68: while ((pres = (HTProtocol *) HTList_nextObject(cur))) {
69: if (!strcmp(pres->name, name)) {
2.12 ! frystyk 70: HT_FREE(pres->name);
2.5 frystyk 71: return HTList_removeObject(protocols, (void *) pres);
72: }
73: }
74: }
75: return NO;
76: }
77:
78: /*
2.10 frystyk 79: ** Returns the client callback function
2.5 frystyk 80: */
2.10 frystyk 81: PUBLIC HTEventCallback * HTProtocol_client (HTProtocol * protocol)
2.5 frystyk 82: {
2.10 frystyk 83: return protocol ? protocol->client : NULL;
84: }
85:
86: /*
87: ** Returns the server callback function
88: */
89: PUBLIC HTEventCallback * HTProtocol_server (HTProtocol * protocol)
90: {
91: return protocol ? protocol->server : NULL;
2.5 frystyk 92: }
93:
94: /*
2.11 frystyk 95: ** Returns YES if preemptive else NO
2.5 frystyk 96: */
2.11 frystyk 97: PUBLIC BOOL HTProtocol_preemptive (HTProtocol * protocol)
2.5 frystyk 98: {
2.11 frystyk 99: return protocol ? protocol->preemptive : NO;
2.3 frystyk 100: }
2.1 frystyk 101:
102: /*
103: ** Delete the list of registered access methods. This is called from
2.5 frystyk 104: ** within HTLibTerminate. Thanks to Eric Sink, eric@spyglass.com
2.1 frystyk 105: */
2.5 frystyk 106: PUBLIC BOOL HTProtocol_deleteAll (void)
2.1 frystyk 107: {
108: if (protocols) {
2.5 frystyk 109: HTList *cur = protocols;
110: HTProtocol *pres;
111: while ((pres = (HTProtocol *) HTList_nextObject(cur))) {
2.12 ! frystyk 112: HT_FREE(pres->name);
! 113: HT_FREE(pres);
2.5 frystyk 114: }
2.1 frystyk 115: HTList_delete(protocols);
116: protocols = NULL;
2.5 frystyk 117: return YES;
2.1 frystyk 118: }
2.5 frystyk 119: return NO;
2.1 frystyk 120: }
121:
122: /*
2.10 frystyk 123: ** Search registered protocols to find suitable protocol object.
124: ** Return protocol object or NULL
2.1 frystyk 125: */
2.10 frystyk 126: PUBLIC HTProtocol * HTProtocol_find (HTRequest * request, CONST char * access)
2.1 frystyk 127: {
2.10 frystyk 128: if (request && access) {
129: HTList * cur = protocols;
130: HTProtocol * pres;
2.9 frystyk 131: if (cur) {
2.10 frystyk 132: while ((pres = (HTProtocol *) HTList_nextObject(cur))) {
133: if (!strcmp(pres->name, access)) return pres;
2.1 frystyk 134: }
135: }
2.10 frystyk 136: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS, (char*) access,
137: (int) strlen(access), "HTProtocol_find");
2.1 frystyk 138: }
2.10 frystyk 139: return NULL;
2.1 frystyk 140: }
2.10 frystyk 141:
2.1 frystyk 142:
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