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Commit | Line | Data |
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a25832e6 | 1 | #include <faim/aim.h> |
9de3ca7e | 2 | |
49c8a2fa | 3 | struct aim_tlvlist_t *aim_readtlvchain(u_char *buf, int maxlen) |
4 | { | |
5 | int pos; | |
6 | struct aim_tlvlist_t *list; | |
7 | struct aim_tlvlist_t *cur; | |
8 | ||
9 | u_short type; | |
10 | u_short length; | |
11 | ||
12 | if (!buf) | |
13 | return NULL; | |
14 | ||
15 | list = NULL; | |
16 | ||
17 | pos = 0; | |
18 | ||
19 | while (pos < maxlen) | |
20 | { | |
21 | type = aimutil_get16(buf+pos); | |
22 | pos += 2; | |
23 | ||
24 | if (pos < maxlen) | |
25 | { | |
26 | length = aimutil_get16(buf+pos); | |
27 | pos += 2; | |
28 | ||
29 | if ((pos+length) <= maxlen) | |
30 | { | |
31 | cur = (struct aim_tlvlist_t *)malloc(sizeof(struct aim_tlvlist_t)); | |
32 | memset(cur, 0x00, sizeof(struct aim_tlvlist_t)); | |
33 | ||
34 | cur->tlv = aim_createtlv(); | |
35 | cur->tlv->type = type; | |
36 | cur->tlv->length = length; | |
37 | cur->tlv->value = (u_char *)malloc(length*sizeof(u_char)); | |
38 | memcpy(cur->tlv->value, buf+pos, length); | |
39 | ||
40 | cur->next = list; | |
41 | list = cur; | |
42 | ||
43 | pos += length; | |
44 | } | |
45 | } | |
46 | } | |
47 | ||
48 | return list; | |
49 | } | |
50 | ||
51 | void aim_freetlvchain(struct aim_tlvlist_t **list) | |
52 | { | |
53 | struct aim_tlvlist_t *cur, *cur2; | |
54 | ||
55 | if (!list || !(*list)) | |
56 | return; | |
57 | ||
58 | cur = *list; | |
59 | while (cur) | |
60 | { | |
61 | aim_freetlv(&cur->tlv); | |
62 | cur2 = cur->next; | |
63 | free(cur); | |
64 | cur = cur2; | |
65 | } | |
66 | list = NULL; | |
67 | return; | |
68 | } | |
69 | ||
70 | /* | |
71 | * Grab the Nth TLV of type type in the TLV list list. | |
72 | */ | |
73 | struct aim_tlv_t *aim_gettlv(struct aim_tlvlist_t *list, u_short type, int nth) | |
74 | { | |
75 | int i; | |
76 | struct aim_tlvlist_t *cur; | |
77 | ||
78 | i = 0; | |
79 | for (cur = list; cur != NULL; cur = cur->next) | |
80 | { | |
81 | if (cur && cur->tlv) | |
82 | { | |
83 | if (cur->tlv->type == type) | |
84 | i++; | |
85 | if (i >= nth) | |
86 | return cur->tlv; | |
87 | } | |
88 | } | |
89 | return NULL; | |
90 | } | |
91 | ||
92 | char *aim_gettlv_str(struct aim_tlvlist_t *list, u_short type, int nth) | |
93 | { | |
94 | struct aim_tlv_t *tlv; | |
95 | char *newstr; | |
96 | ||
97 | if (!(tlv = aim_gettlv(list, type, nth))) | |
98 | return NULL; | |
99 | ||
100 | newstr = (char *) malloc(tlv->length + 1); | |
101 | memcpy(newstr, tlv->value, tlv->length); | |
102 | *(newstr + tlv->length) = '\0'; | |
103 | ||
104 | return newstr; | |
105 | } | |
106 | ||
9de3ca7e | 107 | struct aim_tlv_t *aim_grabtlv(u_char *src) |
108 | { | |
109 | struct aim_tlv_t *dest = NULL; | |
110 | ||
111 | dest = aim_createtlv(); | |
112 | ||
113 | dest->type = src[0] << 8; | |
114 | dest->type += src[1]; | |
115 | ||
116 | dest->length = src[2] << 8; | |
117 | dest->length += src[3]; | |
118 | ||
119 | dest->value = (u_char *) malloc(dest->length*sizeof(u_char)); | |
120 | memset(dest->value, 0, dest->length*sizeof(u_char)); | |
121 | ||
122 | memcpy(dest->value, &(src[4]), dest->length*sizeof(u_char)); | |
123 | ||
124 | return dest; | |
125 | } | |
126 | ||
127 | struct aim_tlv_t *aim_grabtlvstr(u_char *src) | |
128 | { | |
129 | struct aim_tlv_t *dest = NULL; | |
130 | ||
131 | dest = aim_createtlv(); | |
132 | ||
133 | dest->type = src[0] << 8; | |
134 | dest->type += src[1]; | |
135 | ||
136 | dest->length = src[2] << 8; | |
137 | dest->length += src[3]; | |
138 | ||
139 | dest->value = (u_char *) malloc((dest->length+1)*sizeof(u_char)); | |
140 | memset(dest->value, 0, (dest->length+1)*sizeof(u_char)); | |
141 | ||
142 | memcpy(dest->value, &(src[4]), dest->length*sizeof(u_char)); | |
143 | dest->value[dest->length] = '\0'; | |
144 | ||
145 | return dest; | |
146 | } | |
147 | ||
148 | int aim_puttlv (u_char *dest, struct aim_tlv_t *newtlv) | |
149 | { | |
150 | int i=0; | |
151 | ||
152 | dest[i++] = newtlv->type >> 8; | |
153 | dest[i++] = newtlv->type & 0x00FF; | |
154 | dest[i++] = newtlv->length >> 8; | |
155 | dest[i++] = newtlv->length & 0x00FF; | |
156 | memcpy(&(dest[i]), newtlv->value, newtlv->length); | |
157 | i+=newtlv->length; | |
158 | return i; | |
159 | } | |
160 | ||
161 | struct aim_tlv_t *aim_createtlv(void) | |
162 | { | |
163 | struct aim_tlv_t *newtlv = NULL; | |
164 | newtlv = (struct aim_tlv_t *)malloc(sizeof(struct aim_tlv_t)); | |
165 | memset(newtlv, 0, sizeof(struct aim_tlv_t)); | |
166 | return newtlv; | |
167 | } | |
168 | ||
169 | int aim_freetlv(struct aim_tlv_t **oldtlv) | |
170 | { | |
171 | if (!oldtlv) | |
172 | return -1; | |
173 | if (!*oldtlv) | |
174 | return -1; | |
175 | if ((*oldtlv)->value) | |
176 | free((*oldtlv)->value); | |
177 | free(*(oldtlv)); | |
178 | (*oldtlv) = NULL; | |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | int aim_puttlv_16(u_char *buf, u_short t, u_short v) | |
184 | { | |
185 | int curbyte=0; | |
186 | curbyte += aimutil_put16(buf+curbyte, (u_short)(t&0xffff)); | |
187 | curbyte += aimutil_put16(buf+curbyte, (u_short)0x0002); | |
188 | curbyte += aimutil_put16(buf+curbyte, (u_short)(v&0xffff)); | |
189 | return curbyte; | |
190 | } | |
01b59e1e | 191 | |
192 | int aim_puttlv_32(u_char *buf, u_short t, u_long v) | |
193 | { | |
194 | int curbyte=0; | |
195 | curbyte += aimutil_put16(buf+curbyte, (u_short)(t&0xffff)); | |
196 | curbyte += aimutil_put16(buf+curbyte, (u_short)0x0004); | |
197 | curbyte += aimutil_put32(buf+curbyte, (u_long)(v&0xffffffff)); | |
198 | return curbyte; | |
199 | } | |
200 | ||
201 | int aim_puttlv_str(u_char *buf, u_short t, u_short l, u_char *v) | |
202 | { | |
203 | int curbyte; | |
204 | if (!v || !buf) | |
205 | return 0; | |
206 | ||
207 | curbyte = 0; | |
208 | curbyte += aimutil_put16(buf+curbyte, (u_short)(t&0xffff)); | |
209 | curbyte += aimutil_put16(buf+curbyte, (u_short)(l&0xffff)); | |
210 | memcpy(buf+curbyte, v, l); | |
211 | curbyte += l; | |
212 | return curbyte; | |
213 | } |