| 1 | /* |
| 2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
| 3 | * Copyright (C) 2007 Fredrik Tolf <fredrik@dolda2000.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | #include <stdlib.h> |
| 21 | #include <stdio.h> |
| 22 | #include <unistd.h> |
| 23 | #include <errno.h> |
| 24 | #include <time.h> |
| 25 | |
| 26 | #ifdef HAVE_CONFIG_H |
| 27 | #include <config.h> |
| 28 | #endif |
| 29 | #include "transfer.h" |
| 30 | #include "module.h" |
| 31 | #include "log.h" |
| 32 | |
| 33 | #ifdef HAVE_XATTR |
| 34 | #include <attr/xattr.h> |
| 35 | #endif |
| 36 | |
| 37 | struct trdata { |
| 38 | size_t startpos; |
| 39 | }; |
| 40 | |
| 41 | static char *fn = NULL; |
| 42 | |
| 43 | void filelog(char *format, ...) |
| 44 | { |
| 45 | FILE *out; |
| 46 | va_list args; |
| 47 | char *b, *t, *p; |
| 48 | time_t now; |
| 49 | |
| 50 | if(fn == NULL) |
| 51 | return; |
| 52 | if((out = fopen(fn, "a")) == NULL) { |
| 53 | flog(LOG_WARNING, "could not open reqstat log file `%s': %s", fn, strerror(errno)); |
| 54 | return; |
| 55 | } |
| 56 | now = time(NULL); |
| 57 | va_start(args, format); |
| 58 | b = vsprintf2(format, args); |
| 59 | va_end(args); |
| 60 | t = ctime(&now); |
| 61 | if((p = strchr(t, '\n')) != NULL) |
| 62 | *p = 0; |
| 63 | fprintf(out, "%s: %s\n", t, b); |
| 64 | free(b); |
| 65 | fclose(out); |
| 66 | } |
| 67 | |
| 68 | #ifdef HAVE_XATTR |
| 69 | void xainc(wchar_t *file, char *an, off_t inc) |
| 70 | { |
| 71 | char buf[32]; |
| 72 | ssize_t al; |
| 73 | off_t val; |
| 74 | char *fn; |
| 75 | |
| 76 | if(file[0] != L'/') |
| 77 | return; |
| 78 | if((fn = icswcstombs(file, NULL, NULL)) == NULL) { |
| 79 | flog(LOG_WARNING, "could not convert filename %ls into local charset: %s", file, strerror(errno)); |
| 80 | return; |
| 81 | } |
| 82 | if((al = getxattr(fn, an, buf, sizeof(buf) - 1)) < 0) { |
| 83 | if(errno != ENOATTR) { |
| 84 | flog(LOG_WARNING, "could not get xattr %s on %s: %s", an, fn, strerror(errno)); |
| 85 | return; |
| 86 | } |
| 87 | val = 0; |
| 88 | } else { |
| 89 | buf[al] = 0; |
| 90 | val = strtoll(buf, NULL, 10); |
| 91 | } |
| 92 | val += inc; |
| 93 | al = snprintf(buf, sizeof(buf), "%ji", (intmax_t)val); |
| 94 | if(setxattr(fn, an, buf, al, 0) < 0) |
| 95 | flog(LOG_WARNING, "could not set xattr %s on %s: %s", an, fn, strerror(errno)); |
| 96 | } |
| 97 | #endif |
| 98 | |
| 99 | void request(struct transfer *transfer, struct trdata *data) |
| 100 | { |
| 101 | filelog("request %ls", transfer->path); |
| 102 | #ifdef HAVE_XATTR |
| 103 | if(confgetint("reqstat", "xa")) |
| 104 | xainc(transfer->path, "user.dc-req", 1); |
| 105 | #endif |
| 106 | } |
| 107 | |
| 108 | void start(struct transfer *transfer, struct trdata *data) |
| 109 | { |
| 110 | filelog("start %ls at %zi", transfer->path, data->startpos); |
| 111 | #ifdef HAVE_XATTR |
| 112 | if(confgetint("reqstat", "xa")) |
| 113 | xainc(transfer->path, "user.dc-started", 1); |
| 114 | #endif |
| 115 | } |
| 116 | |
| 117 | void finish(struct transfer *transfer, struct trdata *data) |
| 118 | { |
| 119 | filelog("finish %ls at %zi, total %zi", transfer->path, transfer->curpos, transfer->curpos - data->startpos); |
| 120 | #ifdef HAVE_XATTR |
| 121 | if(confgetint("reqstat", "xa")) |
| 122 | xainc(transfer->path, "user.dc-bytes", transfer->curpos - data->startpos); |
| 123 | #endif |
| 124 | } |
| 125 | |
| 126 | static int chattr(struct transfer *transfer, wchar_t *attrib, struct trdata *data) |
| 127 | { |
| 128 | if(!wcscmp(attrib, L"state")) { |
| 129 | if(transfer->state == TRNS_MAIN) |
| 130 | data->startpos = transfer->curpos; |
| 131 | start(transfer, data); |
| 132 | } else if(!wcscmp(attrib, L"path")) { |
| 133 | if(transfer->path[0] != L'/') { |
| 134 | CBUNREG(transfer, trans_ac, data); |
| 135 | CBUNREG(transfer, trans_destroy, data); |
| 136 | free(data); |
| 137 | } |
| 138 | request(transfer, data); |
| 139 | } |
| 140 | return(0); |
| 141 | } |
| 142 | |
| 143 | static int destroy(struct transfer *transfer, struct trdata *data) |
| 144 | { |
| 145 | if(transfer->curpos > data->startpos) |
| 146 | finish(transfer, data); |
| 147 | free(data); |
| 148 | return(0); |
| 149 | } |
| 150 | |
| 151 | static int reg(struct transfer *transfer, void *uudata) |
| 152 | { |
| 153 | struct trdata *data; |
| 154 | |
| 155 | if(transfer->dir != TRNSD_UP) |
| 156 | return(0); |
| 157 | data = memset(smalloc(sizeof(*data)), 0, sizeof(*data)); |
| 158 | CBREG(transfer, trans_ac, (int (*)(struct transfer *, wchar_t *, void *))chattr, NULL, data); |
| 159 | CBREG(transfer, trans_destroy, (int (*)(struct transfer *, void *))destroy, NULL, data); |
| 160 | return(0); |
| 161 | } |
| 162 | |
| 163 | static int chfile(struct configvar *var, void *uudata) |
| 164 | { |
| 165 | if(fn != NULL) |
| 166 | free(fn); |
| 167 | if(var->val.str[0] == L'\0') { |
| 168 | fn = NULL; |
| 169 | } else { |
| 170 | if((fn = icwcstombs(var->val.str, NULL)) == NULL) |
| 171 | flog(LOG_WARNING, "could not convert reqstat filename `%ls' into local charset: %s", var->val.str, strerror(errno)); |
| 172 | } |
| 173 | return(0); |
| 174 | } |
| 175 | |
| 176 | static int init(int hup) |
| 177 | { |
| 178 | if(!hup) { |
| 179 | GCBREG(newtransfercb, reg, NULL); |
| 180 | chfile(confgetvar("reqstat", "file"), NULL); |
| 181 | CBREG(confgetvar("reqstat", "file"), conf_update, chfile, NULL, NULL); |
| 182 | } |
| 183 | return(0); |
| 184 | } |
| 185 | |
| 186 | static struct configvar myvars[] = { |
| 187 | /** The name of a file to log upload request information to. If |
| 188 | * unspecified, upload requests will not be logged. */ |
| 189 | {CONF_VAR_STRING, "file", {.str = L""}}, |
| 190 | /** If set to true, upload statistics of files will be accumulated |
| 191 | * in counters stored in extends attributes (see attr(5)) on the |
| 192 | * files themselves. The data accumulated is the number of |
| 193 | * requests, the number of successfully started uploads and the |
| 194 | * number of uploaded bytes. */ |
| 195 | {CONF_VAR_BOOL, "xa", {.num = 0}}, |
| 196 | {CONF_VAR_END} |
| 197 | }; |
| 198 | |
| 199 | static struct module me = { |
| 200 | .conf = { |
| 201 | .vars = myvars |
| 202 | }, |
| 203 | .init = init, |
| 204 | .name = "reqstat" |
| 205 | }; |
| 206 | |
| 207 | MODULE(me) |