projects / thirdparty / squid.git / blame
| Commit | Line | Data |
|---|---|---|
| 92ae4c86 AR |
1 | /* |
| 2 | * DEBUG: section 09 File Transfer Protocol (FTP) | |
| 3 | */ | |
| 4 | ||
| 5 | #include "squid.h" | |
| 6 | #include "ftp/Parsing.h" | |
| 7 | #include "ip/Address.h" | |
| 8 | #include "MemBuf.h" | |
| 9 | #include "SquidConfig.h" | |
| 10 | ||
| 11 | bool | |
| 12 | Ftp::ParseIpPort(const char *buf, const char *forceIp, Ip::Address &addr) | |
| 13 | { | |
| 14 | int h1, h2, h3, h4; | |
| 15 | int p1, p2; | |
| 16 | const int n = sscanf(buf, "%d,%d,%d,%d,%d,%d", | |
| 17 | &h1, &h2, &h3, &h4, &p1, &p2); | |
| 18 | ||
| 19 | if (n != 6 || p1 < 0 || p2 < 0 || p1 > 255 || p2 > 255) | |
| 20 | return false; | |
| 21 | ||
| 22 | if (forceIp) { | |
| 23 | addr = forceIp; // but the above code still validates the IP we got | |
| 24 | } else { | |
| 25 | static char ipBuf[1024]; | |
| 26 | snprintf(ipBuf, sizeof(ipBuf), "%d.%d.%d.%d", h1, h2, h3, h4); | |
| 27 | addr = ipBuf; | |
| 28 | ||
| 29 | if (addr.isAnyAddr()) | |
| 30 | return false; | |
| 31 | } | |
| 32 | ||
| 33 | const int port = ((p1 << 8) + p2); | |
| 34 | ||
| 35 | if (port <= 0) | |
| 36 | return false; | |
| 37 | ||
| 38 | if (Config.Ftp.sanitycheck && port < 1024) | |
| 39 | return false; | |
| 40 | ||
| 41 | addr.port(port); | |
| 42 | return true; | |
| 43 | } | |
| 44 | ||
| 45 | bool | |
| 46 | Ftp::ParseProtoIpPort(const char *buf, Ip::Address &addr) | |
| 47 | { | |
| 48 | ||
| 49 | const char delim = *buf; | |
| 50 | const char *s = buf + 1; | |
| 51 | const char *e = s; | |
| 52 | const int proto = strtol(s, const_cast<char**>(&e), 10); | |
| 53 | if ((proto != 1 && proto != 2) || *e != delim) | |
| 54 | return false; | |
| 55 | ||
| 56 | s = e + 1; | |
| 57 | e = strchr(s, delim); | |
| 58 | char ip[MAX_IPSTRLEN]; | |
| 59 | if (static_cast<size_t>(e - s) >= sizeof(ip)) | |
| 60 | return false; | |
| 61 | strncpy(ip, s, e - s); | |
| 62 | ip[e - s] = '\0'; | |
| 63 | addr = ip; | |
| 64 | ||
| 65 | if (addr.isAnyAddr()) | |
| 66 | return false; | |
| 67 | ||
| 68 | if ((proto == 2) != addr.isIPv6()) // proto ID mismatches address version | |
| 69 | return false; | |
| 70 | ||
| 71 | s = e + 1; // skip port delimiter | |
| 72 | const int port = strtol(s, const_cast<char**>(&e), 10); | |
| 73 | if (port < 0 || *e != '|') | |
| 74 | return false; | |
| 75 | ||
| 76 | if (Config.Ftp.sanitycheck && port < 1024) | |
| 77 | return false; | |
| 78 | ||
| 79 | addr.port(port); | |
| 80 | return true; | |
| 81 | } | |
| 82 | ||
| 83 | const char * | |
| 84 | Ftp::UnescapeDoubleQuoted(const char *quotedPath) | |
| 85 | { | |
| 86 | static MemBuf path; | |
| 87 | path.reset(); | |
| 88 | const char *s = quotedPath; | |
| 89 | if (*s == '"') { | |
| 90 | ++s; | |
| 91 | bool parseDone = false; | |
| 92 | while (!parseDone) { | |
| 93 | if (const char *e = strchr(s, '"')) { | |
| 94 | path.append(s, e - s); | |
| 95 | s = e + 1; | |
| 96 | if (*s == '"') { | |
| 97 | path.append(s, 1); | |
| 98 | ++s; | |
| 99 | } else | |
| 100 | parseDone = true; | |
| 101 | } else { //parse error | |
| 102 | parseDone = true; | |
| 103 | path.reset(); | |
| 104 | } | |
| 105 | } | |
| 106 | } | |
| 107 | return path.content(); | |
| 108 | } |