mirror of
https://github.com/SirHumza/orbisRPC.git
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SirHumza
28f6275a05
- discord: HELLO requires text frame; READY/HELLO timeout diagnostics; invalid-session fast retry path (-3); clamp warning; malformed close - daemon: invalid session resets backoff instead of doubling it - sfo: bounded key scan (no OOB on malformed files) + regression test - build.sh + plugin Makefile compile sfo.c (link verified) - deploy/ARTWORK.md: shared-app asset pipeline, no-URL rule
68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/* sfo.c - PARAM.SFO TITLE extractor (bounds-checked, no libc beyond string).
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* Every PS4 game carries sce_sys/param.sfo with a TITLE field. Inside the
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* game process it is reachable via the app0 mount; the plugin tries those
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* paths first because they work on ANY console with zero setup. */
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#include "sfo.h"
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#include <string.h>
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#include <stdint.h>
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#pragma pack(push, 1)
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typedef struct {
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uint32_t magic; /* 0x46535000 ("\0PSF" little-endian) */
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uint32_t version; /* usually 0x0201 */
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uint32_t key_off;
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uint32_t data_off;
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uint32_t count;
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} sfo_hdr_t;
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typedef struct {
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uint16_t key_off;
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uint16_t fmt; /* 0x0004 = utf8 string (null-padded), 0x0404 = uint32 */
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uint32_t len; /* used bytes (incl. null for strings) */
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uint32_t max_len;
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uint32_t data_off; /* relative to data_off base */
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} sfo_entry_t;
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#pragma pack(pop)
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int sfo_title(const unsigned char *buf, size_t n, char *out, size_t cap){
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if(!buf || !out || cap == 0) return -1;
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out[0] = 0;
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if(n < sizeof(sfo_hdr_t)) return -1;
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const sfo_hdr_t *h = (const sfo_hdr_t *)buf;
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if(h->magic != 0x46535000u) return -1;
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if(h->count == 0 || h->count > 256) return -1;
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if(h->key_off >= n || h->data_off >= n) return -1;
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if(sizeof(sfo_hdr_t) + (size_t)h->count * sizeof(sfo_entry_t) > n) return -1;
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const sfo_entry_t *e = (const sfo_entry_t *)(buf + sizeof(sfo_hdr_t));
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for(uint32_t i = 0; i < h->count; i++){
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size_t ko = (size_t)h->key_off + e[i].key_off;
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if(ko >= n) continue;
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/* keys must be null-terminated INSIDE the buffer: bound the scan */
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size_t kmax = n - ko;
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size_t klen = 0;
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while(klen < kmax && buf[ko + klen]) klen++;
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if(klen >= kmax) continue; /* unterminated key: malformed */
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const char *key = (const char *)(buf + ko);
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/* keys of interest: TITLE first, then language variants TITLE_XX */
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int is_title = (!strcmp(key, "TITLE") ||
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(klen == 8 && !memcmp(key, "TITLE_", 6)));
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if(!is_title) continue;
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if(e[i].fmt != 0x0004 && e[i].fmt != 0x0204) continue;
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size_t dlen = e[i].len;
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if(dlen == 0 || dlen > 256) continue;
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size_t doff = (size_t)h->data_off + e[i].data_off;
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if(doff + dlen > n) continue;
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/* copy up to null, require printable ASCII/UTF-8 start */
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size_t ci = 0;
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for(size_t k = 0; k < dlen && ci < cap - 1; k++){
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unsigned char c = buf[doff + k];
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if(c == 0) break;
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if(c < 0x20 && c != 0x20) break;
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out[ci++] = (char)c;
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}
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out[ci] = 0;
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if(ci > 1) return 0;
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out[0] = 0;
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}
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return -1;
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}
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