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phantomptrandClaude Opus 5.5
c14782944d
Upload, install, convert and manage PS5 game packages over the network. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
83 lines
3.2 KiB
C
83 lines
3.2 KiB
C
#ifndef PS5UPLOAD_FTP_FORMAT_H
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#define PS5UPLOAD_FTP_FORMAT_H
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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/* Pure response formatting for the payload's FTP server.
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*
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* Split out from ftp_server.c so the wire format is testable on the host
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* without sockets — the socket plumbing stays there, the string shapes
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* live here. Same header-only pattern as hw_guard.h and appdb_scan.h.
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* Tests: payload/tests/ftp_format_selftest.c. */
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/* What a client asked for with EPSV. */
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typedef enum {
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FTP_EPSV_IPV4 = 0, /* no argument, or "1" — reply 229 */
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FTP_EPSV_ALL, /* "ALL" — reply 200, client promises EPSV only */
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FTP_EPSV_BAD_PROTO, /* "2" or anything else — reply 522 */
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} ftp_epsv_arg_t;
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static inline ftp_epsv_arg_t ftp_parse_epsv_arg(const char *arg) {
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if (!arg) return FTP_EPSV_IPV4;
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while (*arg == ' ') arg++;
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if (*arg == '\0') return FTP_EPSV_IPV4;
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if (strcasecmp(arg, "ALL") == 0) return FTP_EPSV_ALL;
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if (strcmp(arg, "1") == 0) return FTP_EPSV_IPV4;
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/* "2" is IPv6; our data socket is AF_INET, so refuse rather than
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* hand back a port the client cannot reach. */
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return FTP_EPSV_BAD_PROTO;
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}
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/* "Entering Passive Mode (192,168,86,100,244,183)." */
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static inline int ftp_format_pasv(const unsigned char ip[4], int port, char *out,
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size_t cap) {
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if (!ip || !out || cap == 0 || port < 0 || port > 65535) return -1;
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int n = snprintf(out, cap, "Entering Passive Mode (%u,%u,%u,%u,%u,%u).",
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ip[0], ip[1], ip[2], ip[3], (unsigned)(port >> 8) & 0xFF,
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(unsigned)port & 0xFF);
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if (n < 0 || (size_t)n >= cap) return -1;
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return n;
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}
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/* "Entering Extended Passive Mode (|||62647|)" — RFC 2428 §3. */
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static inline int ftp_format_epsv(int port, char *out, size_t cap) {
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if (!out || cap == 0 || port < 0 || port > 65535) return -1;
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int n = snprintf(out, cap, "Entering Extended Passive Mode (|||%d|)", port);
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if (n < 0 || (size_t)n >= cap) return -1;
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return n;
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}
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/* Ten-character mode string, e.g. "drwxr-xr-x". */
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static inline void ftp_format_mode(int is_dir, unsigned int mode, char out[11]) {
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out[0] = is_dir ? 'd' : '-';
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out[1] = (mode & 0400) ? 'r' : '-';
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out[2] = (mode & 0200) ? 'w' : '-';
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out[3] = (mode & 0100) ? 'x' : '-';
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out[4] = (mode & 0040) ? 'r' : '-';
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out[5] = (mode & 0020) ? 'w' : '-';
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out[6] = (mode & 0010) ? 'x' : '-';
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out[7] = (mode & 0004) ? 'r' : '-';
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out[8] = (mode & 0002) ? 'w' : '-';
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out[9] = (mode & 0001) ? 'x' : '-';
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out[10] = '\0';
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}
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/* One LIST line, without the trailing CRLF. */
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static inline int ftp_format_list_line(int is_dir, unsigned int mode,
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long long size, const char *timestr,
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const char *name, char *out, size_t cap) {
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if (!timestr || !name || !out || cap == 0) return -1;
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char perm[11];
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ftp_format_mode(is_dir, mode, perm);
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int n = snprintf(out, cap, "%s 1 root root %lld %s %s", perm, size, timestr,
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name);
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/* Truncation would hand the client a different filename than the one
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* on disk, so refuse instead. */
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if (n < 0 || (size_t)n >= cap) return -1;
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return n;
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}
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#endif
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