chibipub

post.c (6147B)

---

 
 #include "post.h"
 #include "env.h"
 #include "hex.h"
 #include "hash.h"
 #include "debug.h"
 #include "base64.h"
 
 #include <stdio.h>
 #include <time.h>
 #include <string.h>
 #include <assert.h>
 
 /*
 {
   "id": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161/activity",
   "type": "Create",
   "actor": "https://bitcoinhackers.org/users/jb55",
   "published": "2021-10-08T17:34:26Z",
   "to": [
     "https://www.w3.org/ns/activitystreams#Public"
   ],
   "cc": [
     "https://bitcoinhackers.org/users/jb55/followers"
   ],
   "object": {
     "id": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161",
     "type": "Note",
     "summary": null,
     "inReplyTo": "https://bitcoinhackers.org/users/jb55/statuses/107067094137302681",
     "published": "2021-10-08T17:34:26Z",
     "url": "https://bitcoinhackers.org/@jb55/107067111309333161",
     "attributedTo": "https://bitcoinhackers.org/users/jb55",
     "to": [
       "https://www.w3.org/ns/activitystreams#Public"
     ],
     "cc": [
       "https://bitcoinhackers.org/users/jb55/followers"
     ],
     "sensitive": false,
     "atomUri": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161",
     "inReplyToAtomUri": "https://bitcoinhackers.org/users/jb55/statuses/107067094137302681",
     "conversation": "tag:bitcoinhackers.org,2021-10-08:objectId=12204931:objectType=Conversation",
     "content": "<p>now this is retro computer gaming: &apos;70s Colossal Cave Adventure on &apos;60s teletype</p><p><a href=\"https://www.youtube.com/watch?v=Fr-HRPr4LxQ\" rel=\"nofollow noopener noreferrer\" target=\"_blank\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">youtube.com/watch?v=Fr-HRPr4Lx</span><span class=\"invisible\">Q</span></a></p>",
     "contentMap": {
       "en": "<p>now this is retro computer gaming: &apos;70s Colossal Cave Adventure on &apos;60s teletype</p><p><a href=\"https://www.youtube.com/watch?v=Fr-HRPr4LxQ\" rel=\"nofollow noopener noreferrer\" target=\"_blank\"><span class=\"invisible\">https://www.</span><span class=\"ellipsis\">youtube.com/watch?v=Fr-HRPr4Lx</span><span class=\"invisible\">Q</span></a></p>"
     },
     "attachment": [],
     "tag": [],
     "replies": {
       "id": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161/replies",
       "type": "Collection",
       "first": {
         "type": "CollectionPage",
         "next": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161/replies?only_other_accounts=true&page=true",
         "partOf": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161/replies",
         "items": []
       }
     }
   }
 }
 */
 
 //static inline int writekv_(FILE *outbox, const char *key, const ch
 
 
 static int make_id(const char *activity, const char *dt, const char *content,
 		unsigned char buffer[32])
 {
 	debug("make_id: hashing '%s%s%s'", activity, dt, content);
 
 	blake3_hasher hasher;
 	blake3_hasher_init(&hasher);
 	blake3_hasher_update(&hasher, activity, strlen(activity));
 	blake3_hasher_update(&hasher, dt, strlen(dt));
 	blake3_hasher_update(&hasher, content, strlen(content));
 	blake3_hasher_finalize(&hasher, buffer, 32);
 
 	return 1;
 }
 
 #define writekv(key, fmt, ...) fprintf(outbox, "\"" key "\":" fmt, ## __VA_ARGS__)
 
 static void make_pubdate(char *buffer, int buflen)
 {
 	char scratch[128];
 	struct timespec dt;
 	struct tm utc;
 
 	clock_gettime(CLOCK_REALTIME, &dt);
 	gmtime_r(&dt.tv_sec, &utc);
 	strftime(scratch, sizeof(scratch)-1, "%F %T", &utc);
 	snprintf(buffer, buflen-1, "%s.%ldZ", scratch, dt.tv_nsec);
 }
 
 
 int create_post(struct chibipub *pub, struct post *post)
 {
 	char note_id[65];
 	char create_id[65];
 	char pubdate[128];
 	unsigned char rawid[32];
 	FILE *outbox;
 	int ok;
 
 	outbox = fopen("outbox.json", "a");
 	if (!outbox) return 0;
 
 	//base64_encode(rawid, sizeof(rawid), id, sizeof(id), &enclen);
 
 	// published date, includes nanos
 	make_pubdate(pubdate, sizeof(pubdate));
 
 	// note_id = H("note" + formatted_pubdate + content)
 	ok = make_id("note", pubdate, post->content, rawid);
 	assert(ok);
 
 	hex_bytes(rawid, sizeof(rawid), note_id, 64);
 	note_id[32] = '\0';
 
 	// create_id = H("create" + formatted_pubdate + note_id)
 	ok = make_id("create", pubdate, note_id, rawid);
 	assert(ok);
 
 	hex_bytes(rawid, sizeof(rawid), create_id, 64);
 	create_id[32] = '\0';
 
 	fprintf(outbox, "{");
 	// we can just use the first 16 bytes of our id as the shortid
 	writekv("id", "\"https://%s/obj/cr_%s\",", pub->hostname, create_id);
 	writekv("type", "\"Create\",");
 
 	writekv("published", "\"%s\",", pubdate);
 	writekv("to", "[\"https://www.w3.org/ns/activitystreams#Public\"],");
 	writekv("cc", "[\"https://%s/followers\"],", pub->hostname);
 	writekv("object", "{");
 
 	writekv("id", "\"https://%s/obj/note_%s\",", pub->hostname, note_id);
 	writekv("type", "\"Note\",");
 	writekv("summary", "null,");
 
 	if (post->in_reply_to)
 		writekv("inReplyTo", "\"%s\",", post->in_reply_to);
 
 	writekv("published", "\"%s\",", pubdate);
 	writekv("url", "\"https://%s/obj/note_%s\",", pub->hostname, note_id);
 
 	// TODO: multiuser
 	writekv("attributedTo", "\"https://%s\",", pub->hostname);
 	writekv("to", "[\"https://www.w3.org/ns/activitystreams#Public\"],");
 	writekv("cc", "[\"https://%s/followers\"],", pub->hostname);
 	writekv("sensitive", "false,");
 	writekv("atomUri", "\"https://%s/obj/note_%s\",", pub->hostname, note_id);
 	writekv("inReplyToAtomUri", "\"https://%s/obj/note_%s\",", pub->hostname, note_id);
 	writekv("content", "\"%s\"", post->content);
 
 	// TODO: attachments
 	//writekv("attachment", "[],");
 	// TODO: tags
 	//writekv("tag", "[],");
 	// TODO: replies
 	//writekv("replies", "{");
 	//
 	fprintf(outbox, "}");
 
 	/*
 "object": { 
     "replies": {
       "id": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161/replies",
       "type": "Collection",
       "first": {
         "type": "CollectionPage",
         "next": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161/replies?only_other_accounts=true&page=true",
         "partOf": "https://bitcoinhackers.org/users/jb55/statuses/107067111309333161/replies",
         "items": []
       }
     }
   }
   */
 
 	fprintf(outbox, "}\n");
 	
 	return 1;
 }