gopher.c - frontends - front-ends for some sites (experiment)
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gopher.c (7168B)
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1 #include <sys/socket.h>
2 #include <sys/types.h>
3
4 #include <ctype.h>
5 #include <errno.h>
6 #include <netdb.h>
7 #include <stdarg.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12
13 #include "https.h"
14 #include "util.h"
15 #include "youtube.h"
16
17 #define OUT(s) (fputs((s), stdout))
18 #define OUTTEXT(s) gophertext(stdout, s, strlen(s));
19 #define OUTLINK(s) gophertext(stdout, s, strlen(s));
20
21 static const char *host = "127.0.0.1", *port = "70", *requestpath = "/";
22
23 void
24 line(int _type, const char *username, const char *selector)
25 {
26 putchar(_type);
27 OUTTEXT(username);
28 putchar('\t');
29 OUTLINK(selector);
30 printf("\t%s\t%s\r\n", host, port);
31 }
32
33 void
34 error(const char *s)
35 {
36 line('3', s, "");
37 }
38
39 void
40 info(const char *s)
41 {
42 line('i', s, "");
43 }
44
45 void
46 header(void)
47 {
48 }
49
50 void
51 footer(void)
52 {
53 fputs(".\r\n", stdout);
54 }
55
56 int
57 render_search(struct search_response *r)
58 {
59 struct item *v;
60 size_t i;
61
62 if (pledge("stdio", NULL) == -1)
63 exit(1);
64
65 header();
66
67 for (i = 0; i < r->nitems; i++) {
68 v = &(r->items[i]);
69
70 if (i > 0) {
71 info("");
72 info("");
73 }
74 if (v->id[0])
75 putchar('h');
76 else
77 putchar('i');
78
79 switch (v->linktype) {
80 case Channel:
81 OUT("[Channel] ");
82 OUTTEXT(v->channeltitle);
83 break;
84 case Movie:
85 OUT("[Movie] ");
86 OUTTEXT(v->title);
87 break;
88 case Playlist:
89 OUT("[Playlist] ");
90 OUTTEXT(v->title);
91 break;
92 default:
93 OUTTEXT(v->title);
94 break;
95 }
96
97 OUT("\t");
98 if (v->id[0]) {
99 OUT("URL:https://www.youtube.com/embed/");
100 OUTLINK(v->id);
101 }
102 printf("\t%s\t%s\r\n", host, port);
103
104 if (v->id[0]) {
105 printf("1Details\t%s?v=", requestpath);
106 OUTLINK(v->id);
107 printf("\t%s\t%s\r\n", host, port);
108 }
109
110 if (v->channelid[0]) {
111 OUT("1");
112 OUTTEXT(v->channeltitle);
113 printf("\t%s?c=", requestpath);
114 OUTLINK(v->channelid);
115 printf("\t%s\t%s\r\n", host, port);
116 } else if (v->userid[0]) {
117 OUT("1");
118 OUTTEXT(v->channeltitle);
119 printf("\t%s?u=", requestpath);
120 OUTLINK(v->userid);
121 printf("\t%s\t%s\r\n", host, port);
122 } else if (v->channeltitle[0]) {
123 OUT("i");
124 OUTTEXT(v->channeltitle);
125 printf("\t%s\t%s\t%s\r\n", "", host, port);
126 }
127
128 if (v->channelid[0] || v->userid[0]) {
129 OUT("hAtom feed of ");
130 OUTTEXT(v->channeltitle);
131 OUT("\t");
132 OUTLINK("URL:https://www.youtube.com/feeds/videos.xml?");
133 if (v->channelid[0]) {
134 OUT("channel_id=");
135 OUTLINK(v->channelid);
136 } else if (v->userid[0]) {
137 OUT("user=");
138 OUTLINK(v->userid);
139 }
140 printf("\t%s\t%s\r\n", host, port);
141 }
142 if (v->duration[0]) {
143 OUT("iDuration: " );
144 OUTTEXT(v->duration);
145 printf("\t%s\t%s\t%s\r\n", "", host, port);
146 }
147 if (v->publishedat[0]) {
148 OUT("iPublished: ");
149 OUTTEXT(v->publishedat);
150 printf("\t%s\t%s\t%s\r\n", "", host, port);
151 }
152 if (v->viewcount[0]) {
153 OUT("iViews: ");
154 printnumsep(v->viewcount);
155 printf("\t%s\t%s\t%s\r\n", "", host, port);
156 }
157 }
158 footer();
159
160 return 0;
161 }
162
163 int
164 render_video(struct video_response *r)
165 {
166 char buf[256];
167 const char *s, *e;
168 /* softwrap: try to wrap on word boundary, otherwise hardwrap */
169 int i, sw = 72, hw = 9999;
170
171 if (pledge("stdio", NULL) == -1)
172 exit(1);
173
174 header();
175
176 info("");
177
178 OUT("hTitle: ");
179 OUTTEXT(r->title);
180 OUT("\tURL:https://www.youtube.com/embed/");
181 OUTTEXT(r->id);
182 printf("\t%s\t%s\r\n", host, port);
183
184 OUT("hURL: ");
185 OUT("https://www.youtube.com/embed/");
186 OUTTEXT(r->id);
187 OUT("\tURL:");
188 OUT("https://www.youtube.com/embed/");
189 OUTTEXT(r->id);
190 printf("\t%s\t%s\r\n", host, port);
191
192 if (r->lengthseconds > 0) {
193 OUT("iLength: ");
194 if (durationstr(r->lengthseconds, buf, sizeof(buf)) < sizeof(buf))
195 OUTTEXT(buf);
196 printf("\t%s\t%s\t%s\r\n", "", host, port);
197 }
198
199 OUT("hThumbnail: https://i.ytimg.com/vi/");
200 OUTTEXT(r->id);
201 OUT("/hqdefault.jpg\tURL:https://i.ytimg.com/vi/");
202 OUTLINK(r->id);
203 printf("/hqdefault.jpg\t%s\t%s\r\n", host, port);
204
205 if (r->author[0]) {
206 OUT("1Channel: ");
207 OUTTEXT(r->author);
208 printf("\t%s?c=%s\t%s\t%s\r\n", requestpath, r->channelid, host, port);
209
210 if (r->channelid[0]) {
211 OUT("hAtom feed\tURL:https://www.youtube.com/feeds/videos.xml?channel_id=");
212 OUTTEXT(r->channelid);
213 printf("\t%s\t%s\r\n", host, port);
214 }
215 }
216
217 OUT("iViews: ");
218 snprintf(buf, sizeof(buf), "%ld", r->viewcount);
219 printnumsep(buf);
220 printf("\t%s\t%s\t%s\r\n", "", host, port);
221
222 if (r->publishdate[0]) {
223 OUT("iPublished: ");
224 OUTTEXT(r->publishdate);
225 printf("\t%s\t%s\t%s\r\n", "", host, port);
226 }
227
228 if (r->uploaddate[0]) {
229 OUT("iUploaded: ");
230 OUTTEXT(r->uploaddate);
231 printf("\t%s\t%s\t%s\r\n", "", host, port);
232 }
233
234 if (r->shortdescription[0]) {
235 info("");
236 info("");
237
238 /* multi-line text */
239 i = 0;
240 for (s = e = r->shortdescription; ; e++) {
241 if (!i)
242 putchar('i');
243 if (*e == '\n' || *e == '\0' ||
244 i > hw || (i > sw && (*e == ' ' || *e == '\t'))) {
245 i = 0;
246 gophertext(stdout, s, e - s);
247 printf("\t%s\t%s\t%s\r\n", "", host, port);
248 if (*e == '\0')
249 break;
250 s = e + 1;
251 } else {
252 /* start of rune, wrongly assume 1 rune is 1 column for now */
253 if (!((unsigned char)*e & 0x80))
254 i++;
255 }
256 }
257 }
258
259 footer();
260
261 return 0;
262 }
263
264 int
265 main(void)
266 {
267 struct search_response *r = NULL;
268 struct video_response *vr = NULL;
269 const char *channelid = "", *userid = "", *videoid = "";
270 const char *querystring = "", *rawsearch = "", *p;
271 char search[1024] = "";
272
273 if (pledge("stdio dns inet rpath unveil", NULL) == -1)
274 exit(1);
275 if (unveil(TLS_CA_CERT_FILE, "r") == -1 ||
276 unveil(NULL, NULL) == -1)
277 exit(1);
278
279 if ((p = getenv("SERVER_NAME")))
280 host = p;
281 if ((p = getenv("SERVER_PORT")))
282 port = p;
283 if ((p = getenv("PATH_INFO")))
284 requestpath = p;
285 if ((p = getenv("QUERY_STRING")))
286 querystring = p;
287
288 p = NULL;
289 if (querystring[0] == '?')
290 querystring++;
291 if (querystring[0] == 'c' && querystring[1] == '=') {
292 channelid = querystring + 2;
293 p = querystring = "";
294 } else if (querystring[0] == 'u' && querystring[1] == '=') {
295 userid = querystring + 2;
296 p = querystring = "";
297 } else if (querystring[0] == 'v' && querystring[1] == '=') {
298 videoid = querystring + 2;
299 p = querystring = "";
300 }
301
302 if (querystring[0])
303 p = querystring;
304 if (!p)
305 p = getenv("X_GOPHER_SEARCH"); /* geomyidae */
306 if (!p)
307 p = getenv("SEARCHREQUEST"); /* gophernicus */
308 if (p)
309 rawsearch = p;
310 if (p && !uriencode(p, search, sizeof(search))) {
311 error("Invalid search");
312 footer();
313 return 0;
314 }
315
316 OUT("7Search");
317 if (rawsearch[0]) {
318 OUT(": ");
319 OUT(rawsearch);
320 }
321 printf("\t%s\t%s\t%s\r\n", requestpath, host, port);
322
323 info("");
324 line('1', "<- back to main directory", requestpath);
325
326 if (search[0]) {
327 r = youtube_search(search, "", "relevance");
328 } else if (channelid[0]) {
329 r = youtube_channel_videos(channelid);
330 } else if (userid[0]) {
331 r = youtube_user_videos(userid);
332 } else if (videoid[0]) {
333 vr = youtube_video(videoid);
334 if (!vr || vr->isfound == 0) {
335 error("No video found");
336 footer();
337 return 0;
338 }
339 render_video(vr);
340 return 0;
341 } else {
342 footer();
343 return 0;
344 }
345 info("");
346
347 if (!r || r->nitems == 0) {
348 error("No videos found");
349 footer();
350 return 0;
351 }
352
353 render_search(r);
354
355 return 0;
356 }