Fossil

){
  const char *zEAddr;
  int i, j, n;
  char c;

  *peErr = 0;
  *pzErr = 0;

  /* Verify the captcha first */
  if( needCaptcha ){
    if( !captcha_is_correct(1) ){
      *peErr = 2;
      *pzErr = mprintf("incorrect security code");
      return 0;
    }
  }

  /* Check the validity of the email address.
  **
  **  (1) Exactly one '@' character.
  **  (2) No other characters besides [a-zA-Z0-9._+-]
  **
  **  The local part is currently more restrictive than RFC 5322 allows:
  **  https://stackoverflow.com/a/2049510/142454  We will expand this as
  **  necessary.
  */
  zEAddr = P("e");
  if( zEAddr==0 ){
    *peErr = 1;
    *pzErr = mprintf("required");
    return 0;
  }
  for(i=j=n=0; (c = zEAddr[i])!=0; i++){
    if( c=='@' ){
      n = i;
      j++;
      continue;
    }
    if( !fossil_isalnum(c) && c!='.' && c!='_' && c!='-' && c!='+' ){

  }
  if( n>i-5 ){
    *peErr = 1;
    *pzErr = mprintf("email domain too short");
     return 0;
  }

  if( authorized_subscription_email(zEAddr)==0 ){

    *peErr = 1;
    *pzErr = mprintf("not an authorized email address");
    return 0;
  }

  /* Check to make sure the email address is available for reuse */
  if( db_exists("SELECT 1 FROM subscriber WHERE semail=%Q", zEAddr) ){
    *peErr = 1;
    *pzErr = mprintf("this email address is used by someone else");

      style_submenu_element("My Subscription","%R/alerts");
    }else{
      /* Everybody else jumps to the page to administer their own
      ** account only. */
      cgi_redirectf("%R/alerts");
      return;
    }
  }
  if( !g.perm.Admin && !db_get_boolean("anon-subscribe",1) ){
    register_page();
    return;
  }
  alert_submenu_common();
  needCaptcha = !login_is_individual();
  if( P("submit")
   && cgi_csrf_safe(1)
   && subscribe_error_check(&eErr,&zErr,needCaptcha)
  ){

        @ <p>The following internal error was encountered while trying
        @ to send the confirmation email:
        @ <blockquote><pre>
        @ %h(pSender->zErr)
        @ </pre></blockquote>
      }else{
        @ <p>An email has been sent to "%h(zEAddr)". That email contains a
        @ hyperlink that you must click to activate your
        @ subscription.</p>
      }
      alert_sender_free(pSender);
      style_footer();
    }
    return;
  }

  @  <td><input type="text" name="e" value="%h(PD("e",""))" size="30"></td>
  @ <tr>
  if( eErr==1 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ </tr>
  if( needCaptcha ){
    const char *zInit = "";
    if( P("captchaseed")!=0 && eErr!=2 ){
      uSeed = strtoul(P("captchaseed"),0,10);
      zInit = P("captcha");
    }else{
      uSeed = captcha_seed();
    }
    zDecoded = captcha_decode(uSeed);
    zCaptcha = captcha_render(zDecoded);
    @ <tr>
    @  <td class="form_label">Security Code:</td>
    @  <td><input type="text" name="captcha" value="%h(zInit)" size="30">
    captcha_speakit_button(uSeed, "Speak the code");
    @  <input type="hidden" name="captchaseed" value="%u(uSeed)"></td>
    @ </tr>
    if( eErr==2 ){
      @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
    }
    @ </tr>

  const char *sctime;           /* Time subscription created */
  int eErr = 0;                 /* Type of error */
  char *zErr = 0;               /* Error message text */
  int sid = 0;                  /* Subscriber ID */
  int nName;                    /* Length of zName in bytes */
  char *zHalfCode;              /* prefix of subscriberCode */

  db_begin_transaction();
  if( alert_webpages_disabled() ){
    db_commit_transaction();
    return;
  }
  login_check_credentials();
  if( !g.perm.EmailAlert ){
    db_commit_transaction();
    login_needed(g.anon.EmailAlert);

    /*NOTREACHED*/
  }
  isLogin = login_is_individual();
  zName = P("name");
  nName = zName ? (int)strlen(zName) : 0;
  if( g.perm.Admin && P("sid")!=0 ){
    sid = atoi(P("sid"));
  }
  if( sid==0 && nName>=32 ){
    sid = db_int(0,
       "SELECT CASE WHEN hex(subscriberCode) LIKE (%Q||'%%')"
       "            THEN subscriberId ELSE 0 END"
       "  FROM subscriber WHERE subscriberCode>=hextoblob(%Q)"
       " LIMIT 1", zName, zName);
  }
  if( sid==0 && isLogin ){
    sid = db_int(0, "SELECT subscriberId FROM subscriber"
                    " WHERE suname=%Q", g.zLogin);
  }
  if( sid==0 ){
    db_commit_transaction();
    cgi_redirect("subscribe");

    /*NOTREACHED*/
  }
  alert_submenu_common();
  if( P("submit")!=0 && cgi_csrf_safe(1) ){
    char newSsub[10];
    int nsub = 0;
    Blob update;

  if( P("delete")!=0 && cgi_csrf_safe(1) ){
    if( !PB("dodelete") ){
      eErr = 9;
      zErr = mprintf("Select this checkbox and press \"Unsubscribe\" again to"
                     " unsubscribe");
    }else{
      alert_unsubscribe(sid);
      db_commit_transaction();
      return; 
    }
  }
  style_header("Update Subscription");
  db_prepare(&q,
    "SELECT"
    "  semail,"                       /* 0 */
    "  sverified,"                    /* 1 */
    "  sdonotcall,"                   /* 2 */
    "  sdigest,"                      /* 3 */
    "  ssub,"                         /* 4 */
    "  smip,"                         /* 5 */
    "  suname,"                       /* 6 */
    "  datetime(mtime,'unixepoch'),"  /* 7 */
    "  datetime(sctime,'unixepoch')," /* 8 */
    "  hex(subscriberCode)"           /* 9 */
    " FROM subscriber WHERE subscriberId=%d", sid);
  if( db_step(&q)!=SQLITE_ROW ){
    db_finalize(&q);
    db_commit_transaction();
    cgi_redirect("subscribe");

    /*NOTREACHED*/
  }
  if( ssub==0 ){
    semail = db_column_text(&q, 0);
    sdonotcall = db_column_int(&q, 2);
    sdigest = db_column_int(&q, 3);
    ssub = db_column_text(&q, 4);
  }

  sw = strchr(ssub,'w')!=0;
  sx = strchr(ssub,'x')!=0;
  smip = db_column_text(&q, 5);
  mtime = db_column_text(&q, 7);
  sctime = db_column_text(&q, 8);
  if( !g.perm.Admin && !sverified ){
    if( nName==64 ){
      db_multi_exec(
        "UPDATE subscriber SET sverified=1"
        " WHERE subscriberCode=hextoblob(%Q)",
        zName);
      if( db_get_boolean("selfreg-verify",0) ){
        char *zNewCap = db_get("default-perms","u");
        db_multi_exec(
           "UPDATE user"
           "   SET cap=%Q"
           " WHERE cap='7' AND login=("
           "   SELECT suname FROM subscriber"
           "    WHERE subscriberCode=hextoblob(%Q))",
           zNewCap, zName
        );
        login_set_capabilities(zNewCap, 0);
      }
      @ <h1>Your email alert subscription has been verified!</h1>
      @ <p>Use the form below to update your subscription information.</p>
      @ <p>Hint:  Bookmark this page so that you can more easily update
      @ your subscription information in the future</p>
    }else{
      @ <h2>Your email address is unverified</h2>
      @ <p>You should have received an email message containing a link

  @  <input type="submit" name="delete" value="Unsubscribe">
  @ </tr>
  @ </table>
  @ </form>
  fossil_free(zErr);
  db_finalize(&q);
  style_footer();
  db_commit_transaction();
  return;
}

/* This is the message that gets sent to describe how to change
** or modify a subscription
*/
static const char zUnsubMsg[] = 
@ To changes your subscription settings at %s visit this link:

void capability_summary(void){
  Stmt q;
  CapabilityString *pCap;
  char *zSelfCap;
  char *zPubPages = db_get("public-pages",0);
  int hasPubPages = zPubPages && zPubPages[0];

  pCap = capability_add(0, db_get("default-perms","u"));
  capability_expand(pCap);
  zSelfCap = capability_string(pCap);
  capability_free(pCap);

  db_prepare(&q,
    "WITH t(id,seq) AS (VALUES('nobody',1),('anonymous',2),('reader',3),"
                       "('developer',4))"

** to self-registered users.
*/
int login_self_register_available(const char *zNeeded){
  CapabilityString *pCap;
  int rc;
  if( !db_get_boolean("self-register",0) ) return 0;
  if( zNeeded==0 ) return 1;
  pCap = capability_add(0, db_get("default-perms", "u"));
  capability_expand(pCap);
  rc = capability_has_any(pCap, zNeeded);
  capability_free(pCap);
  return rc;
}

/*

  */
  zPublicPages = db_get("public-pages",0);
  if( zPublicPages!=0 ){
    Glob *pGlob = glob_create(zPublicPages);
    const char *zUri = PD("REQUEST_URI","");
    zUri += (int)strlen(g.zTop);
    if( glob_match(pGlob, zUri) ){
      login_set_capabilities(db_get("default-perms", "u"), 0);
    }
    glob_free(pGlob);
  }
}

/*
** Memory of settings

    "SELECT 1 FROM user WHERE login=%Q "
    "UNION ALL "
    "SELECT 1 FROM event WHERE user=%Q OR euser=%Q",
    zUserID, zUserID, zUserID
  );
  return rc;
}

/*
** Check an email address and confirm that it is valid for self-registration.
** The email address is known already to be well-formed.  Return true
** if the email address is on the allowed list.
**
** The default behavior is that any valid email address is accepted.
** But if the "auth-sub-email" setting exists and is not empty, then
** it is a comma-separated list of GLOB patterns for email addresses
** that are authorized to self-register.
*/
int authorized_subscription_email(const char *zEAddr){
  char *zGlob = db_get("auth-sub-email",0);
  Glob *pGlob;
  char *zAddr;
  int rc;

  if( zGlob==0 || zGlob[0]==0 ) return 1;
  zGlob = fossil_strtolwr(fossil_strdup(zGlob));
  pGlob = glob_create(zGlob);
  fossil_free(zGlob);

  zAddr = fossil_strtolwr(fossil_strdup(zEAddr));
  rc = glob_match(pGlob, zAddr);
  fossil_free(zAddr);
  glob_free(pGlob);
  return rc!=0;
}

/*
** WEBPAGE: register
**
** Page to allow users to self-register.  The "self-register" setting
** must be enabled for this page to operate.
*/
void register_page(void){
  const char *zUserID, *zPasswd, *zConfirm, *zEAddr;
  const char *zDName;
  unsigned int uSeed;
  const char *zDecoded;

  int iErrLine = -1;
  const char *zErr = 0;
  int captchaIsCorrect = 0; /* True on a correct captcha */
  char *zCaptcha = "";      /* Value of the captcha text */
  char *zPerms;             /* Permissions for the default user */
  int canDoAlerts = 0;      /* True if receiving email alerts is possible */
  int doAlerts = 0;         /* True if subscription is wanted too */
  if( !db_get_boolean("self-register", 0) ){
    style_header("Registration not possible");
    @ <p>This project does not allow user self-registration. Please contact the
    @ project administrator to obtain an account.</p>
    style_footer();
    return;
  }
  zPerms = db_get("default-perms", "u");

  /* Prompt the user for email alerts if this repository is configured for
  ** email alerts and if the default permissions include "7" */
  canDoAlerts = alert_tables_exist() && db_int(0,
    "SELECT fullcap(%Q) GLOB '*7*'", zPerms
  );
  doAlerts = canDoAlerts && atoi(PD("alerts","1"))!=0;

  zUserID = PDT("u","");
  zPasswd = PDT("p","");
  zConfirm = PDT("cp","");
  zEAddr = PDT("ea","");
  zDName = PDT("dn","");

  /* Verify user imputs */
  if( P("new")==0 || !cgi_csrf_safe(1) ){
    /* This is not a valid form submission.  Fall through into
    ** the form display */
  }else if( (captchaIsCorrect = captcha_is_correct(1))==0 ){
    iErrLine = 6;
    zErr = "Incorrect CAPTCHA";
  }else if( strlen(zUserID)<6 ){
    iErrLine = 1;
    zErr = "User ID too short. Must be at least 6 characters.";
  }else if( sqlite3_strglob("*[^-a-zA-Z0-9_.]*",zUserID)==0 ){
    iErrLine = 1;
    zErr = "User ID may not contain spaces or special characters.";
  }else if( zDName[0]==0 ){
    iErrLine = 2;
    zErr = "Required";
  }else if( zEAddr[0]==0 ){
    iErrLine = 3;
    zErr = "Required";
  }else if( email_address_is_valid(zEAddr,0)==0 ){
    iErrLine = 3;
    zErr = "Not a valid email address";
  }else if( authorized_subscription_email(zEAddr)==0 ){
    iErrLine = 3;
    zErr = "Not an authorized email address";
  }else if( strlen(zPasswd)<6 ){
    iErrLine = 4;
    zErr = "Password must be at least 6 characters long";
  }else if( fossil_strcmp(zPasswd,zConfirm)!=0 ){
    iErrLine = 5;
    zErr = "Passwords do not match";
  }else if( login_self_choosen_userid_already_exists(zUserID) ){

    zErr = "This email address is already claimed by another user";
  }else{
    /* If all of the tests above have passed, that means that the submitted
    ** form contains valid data and we can proceed to create the new login */
    Blob sql;
    int uid;
    char *zPass = sha1_shared_secret(zPasswd, zUserID, 0);
    const char *zStartPerms = zPerms;
    if( db_get_boolean("selfreg-verify",0) ){
      /* If email verification is required for self-registration, initalize
      ** the new user capabilities to just "7" (Sign up for email).  The
      ** full "default-perms" permissions will be added when they click
      ** the verification link on the email they are sent. */
      zStartPerms = "7";
    }
    blob_init(&sql, 0, 0);
    blob_append_sql(&sql,
       "INSERT INTO user(login,pw,cap,info,mtime)\n"
       "VALUES(%Q,%Q,%Q,"
       "'%q <%q>\nself-register from ip %q on '||datetime('now'),now())",
       zUserID, zPass, zStartPerms, zDName, zEAddr, g.zIpAddr);
    fossil_free(zPass);
    db_multi_exec("%s", blob_sql_text(&sql));
    uid = db_int(0, "SELECT uid FROM user WHERE login=%Q", zUserID);
    login_set_user_cookie(zUserID, uid, NULL);
    if( doAlerts ){
      /* Also make the new user a subscriber. */
      Blob hdr, body;

        @ <p>The following internal error was encountered while trying
        @ to send the confirmation email:
        @ <blockquote><pre>
        @ %h(pSender->zErr)
        @ </pre></blockquote>
      }else{
        @ <p>An email has been sent to "%h(zEAddr)". That email contains a
        @ hyperlink that you must click to activate your account.</p>

      }
      alert_sender_free(pSender);
      if( zGoto ){
        @ <p><a href='%h(zGoto)'>Continue</a>
      }
      style_footer();
      return;
    }
    redirect_to_g();
  }

  /* Prepare the captcha. */
  if( captchaIsCorrect ){
    uSeed = strtoul(P("captchaseed"),0,10);
  }else{
    uSeed = captcha_seed();
  }
  zDecoded = captcha_decode(uSeed);
  zCaptcha = captcha_render(zDecoded);

  style_header("Register");
  /* Print out the registration form. */
  form_begin(0, "%R/register");
  if( P("g") ){

  @   <td><input type="password" name="cp" value="%h(zConfirm)" size="30"></td>
  @ </tr>
  if( iErrLine==5 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr>
  @   <td class="form_label" align="right">Captcha:</td>
  @   <td><input type="text" name="captcha" size="30"\
  @ value="%h(captchaIsCorrect?zDecoded:"")" size="30">
  captcha_speakit_button(uSeed, "Speak the captcha text");
  @   </td>
  @ </tr>
  if( iErrLine==6 ){
    @ <tr><td><td><span class='loginError'>&uarr; %h(zErr)</span></td></tr>
  }
  @ <tr><td></td>

**
** COMMAND: test-http
**
** Works like the http command but gives setup permission to all users.
**
** Options:
**   --th-trace          trace TH1 execution (for debugging purposes)
**   --usercap   CAP     user capability string.  (Default: "sx")
**
*/
void cmd_test_http(void){
  const char *zIpAddr;    /* IP address of remote client */
  const char *zUserCap;

  Th_InitTraceLog();

  zUserCap = find_option("usercap",0,1);
  if( zUserCap==0 ){
    g.useLocalauth = 1;
    zUserCap = "sx";
  }
  login_set_capabilities(zUserCap, 0);
  g.httpIn = stdin;
  g.httpOut = stdout;
  fossil_binary_mode(g.httpOut);
  fossil_binary_mode(g.httpIn);
  g.zExtRoot = find_option("extroot",0,1);
  find_server_repository(2, 0);
  g.cgiOutput = 1;

  ** though some content may be accessible anonymously.
  */
  zAnonCap = db_text("", "SELECT fullcap(NULL)");
  zDevCap  = db_text("", "SELECT fullcap('v')");
  zReadCap = db_text("", "SELECT fullcap('u')");
  zPubPages = db_get("public-pages",0);
  hasSelfReg = db_get_boolean("self-register",0);
  pCap = capability_add(0, db_get("default-perms","u"));
  capability_expand(pCap);
  zSelfCap = capability_string(pCap);
  capability_free(pCap);
  if( hasAnyCap(zAnonCap,"as") ){
    @ <li><p>This repository is <big><b>Wildly INSECURE</b></big> because
    @ it grants administrator privileges to anonymous users.  You
    @ should <a href="takeitprivate">take this repository private</a>

  @ latest version of the embedded documentation in the www/ folder without
  @ allowing them to see the rest of the source code.
  @ (Property: "public-pages")
  @ </p>

  @ <hr />
  onoff_attribute("Allow users to register themselves",
                  "self-register", "selfreg", 0, 0);
  @ <p>Allow users to register themselves on the /register webpage.
  @ A self-registration creates a new entry in the USER table and
  @ perhaps also in the SUBSCRIBER table if email notification is
  @ enabled.
  @ (Property: "self-register")</p>

  @ <hr />
  onoff_attribute("Email verification required for self-registration",
                  "selfreg-verify", "sfverify", 0, 0);
  @ <p>If enabled, self-registration creates a new entry in the USER table
  @ with only capabilities "7".  The default user capabilities are not
  @ added until the email address associated with the self-registration
  @ has been verified. This setting only makes sense if
  @ email notifications are enabled.
  @ (Property: "selfreg-verify")</p>

  @ <hr />
  onoff_attribute("Allow anonymous subscriptions",
                  "anon-subscribe", "anonsub", 1, 0);
  @ <p>If disabled, email notification subscriptions are only allowed
  @ for users with a login.  If Nobody or Anonymous visit the /subscribe
  @ page, they are redirected to /register or /login.
  @ (Property: "anon-subscribe")</p>

  @ <hr />
  entry_attribute("Authorized subscription email addresses", 35,
                  "auth-sub-email", "asemail", "", 0);
  @ <p>This is a comma-separated list of GLOB patterns that specify
  @ email addresses that are authorized to subscriptions.  If blank
  @ (the usual case), then any email address can be used to self-register.
  @ This setting is used to limit subscriptions to members of a particular
  @ organization or group based on their email address.
  @ (Property: "auth-sub-email")</p>

  @ <hr />
  entry_attribute("Default privileges", 10, "default-perms",
                  "defaultperms", "u", 0);
  @ <p>Permissions given to users that... <ul><li>register themselves using
  @ the self-registration procedure (if enabled), or <li>access "public"
  @ pages identified by the public-pages glob pattern above, or <li>

  }else{
    @   <td><input type="text" name="login" value="%h(zLogin)" />\
    if( alert_tables_exist() ){
      int sid;
      sid = db_int(0, "SELECT subscriberId FROM subscriber"
                      " WHERE suname=%Q", zLogin);
      if( sid>0 ){
        @ &nbsp;&nbsp;<a href="%R/alerts?sid=%d(sid)">\
        @ (subscription info for %h(zLogin))</a>\
      }
    }
    @ </td></tr>
    @ <tr>
    @   <td class="usetupEditLabel">Contact&nbsp;Info:</td>
    @   <td><textarea name="info" cols="40" rows="2">%h(zInfo)</textarea></td>

  int useProxy;    /* Used to remember that a proxy is in use */
  char *proxyUrlPath;
  int proxyOrigPort; /* Tunneled port number for https through proxy */
};
#endif /* INTERFACE */












/*
** Parse the given URL.  Populate members of the provided UrlData structure
** as follows:
**
**      isFile      True if FILE:
**      isHttps     True if HTTPS:
**      isSsh       True if SSH:

      n = strlen(pUrlData->name);
      if( pUrlData->name[0]=='[' && n>2 && pUrlData->name[n-1]==']' ){
        pUrlData->name++;
        pUrlData->name[n-2] = 0;
      }
      zLogin = mprintf("");
    }
    fossil_strtolwr(pUrlData->name);
    if( c==':' ){
      pUrlData->port = 0;
      i++;
      while( (c = zUrl[i])!=0 && fossil_isdigit(c) ){
        pUrlData->port = pUrlData->port*10 + c - '0';
        i++;
      }

  if( munmap(p, n) ){
    fossil_panic("munmap failed: %d\n", errno);
  }
#else
  fossil_free(p);
#endif
}

/*
** Translate every upper-case character in the input string into
** its equivalent lower-case.
*/
char *fossil_strtolwr(char *zIn){
  char *zStart = zIn;
  if( zIn ){
    while( *zIn ){
      *zIn = fossil_tolower(*zIn);
      zIn++;
    }
  }
  return zStart;
}

/*
** This function implements a cross-platform "system()" interface.
*/
int fossil_system(const char *zOrigCmd){
  int rc;
#if defined(_WIN32)