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--- средства_программирования_shell [2024/09/12 13:48]
val [Web сервер на shell]
+++ средства_программирования_shell [2026/05/12 16:34] (current)
val
@@ Line 10: / Line 10: @@
   * [[https://www.tutorialspoint.com/execute_bash_online.php|Execute Bash Shell Online]]
   * [[https://www.shellcheck.net/|ShellCheck finds bugs in your shell scripts.]]
+  * [[http://redsymbol.net/articles/unofficial-bash-strict-mode/|Use Bash Strict Mode (Unless You Love Debugging)]]
 ===== Проверка синтаксиса =====
@@ Line 192: / Line 194: @@
 <code>
-$ cat log_gen.sh
+bash -c 'cat <<END >log_gen.sh
-</code><code>
 while :
 do
@@ Line 199: / Line 200: @@
   logger -t cisco -p local0.info "Message 2"
 done
+END'
 </code><code>
-$ sh cisco_log_gen.sh
+$ sh log_gen.sh
 </code>
 ===== Примеры использования скриптов sh в системах загрузки =====
@@ Line 394: / Line 396: @@
 #!/bin/bash
 base=/var/www
-#log=/var/log/webd.log
+#exec 2>>/var/log/webd.log
+#echo "ARGS: $*" >&2
 read request
-##echo "$request" >> $log       # for educational demonstration
+##echo "$request" >&2       # for educational demonstration
 filename="${request#GET }"
@@ Line 409: / Line 412: @@
 do
   read -r header
-##  echo "$header" >> $log       # for educational demonstration
+##  echo "$header" >&2       # for educational demonstration
   [ "$header" == $'\r' ] && break;
 ##  [ "$header" == $'' ] && break;    # for STDIN/STDOUT educational demonstration
@@ Line 416: / Line 419: @@
 if [ -e "$filename" ]
 then
-#  echo `date` OK $filename on `hostname` >> $log
+#  echo `date` OK $filename on `hostname` >&2
   echo -e "HTTP/1.1 200 OK\r"
   echo -e "Content-Type: $(/usr/bin/file -bi "$filename")\r"
@@ Line 422: / Line 425: @@
   /bin/cat "$filename"
 else
-#  echo "$(date)" ERR "$filename" on "$(hostname)" >> "$log"
+#  echo "$(date)" ERR "$filename" on "$(hostname)" >&2
   echo -e "HTTP/1.1 404 Not Found\r"
   echo -e "Content-Type: text/html;\r"
@@ Line 436: / Line 439: @@
 </code>
-==== Ресурсы Web сервера на shell ====
+=== Ресурсы Web сервера на shell ===
 <code>
-# mkdir /var/www
+# mkdir -p /var/www/img
 # cat /var/www/index.html
@@ Line 447: / Line 450: @@
 </html>
 </code><code>
-# mkdir /var/www/img
+# wget -O /var/www/img/logo.gif https://val.bmstu.ru/unix/Media/logo.gif
-</code>
-<code>
-# wget -O /var/www/img/logo.gif http://val.bmstu.ru/unix/Media/logo.gif
 </code>
   * [[Сервис INETD]]
-==== Проверка ====
+  * [[Управление сервисами в Linux#Systemd Sockets]]
+=== Проверка ===
 <code>
@@ Line 467: / Line 467: @@
 ==== Отправка email с вложениями ====
+  * [[Утилита curl]]
   * [[https://serverfault.com/questions/38919/send-an-email-with-an-attached-file-using-telnet-or-netcat|Send an email with an attached file using telnet or netcat]]
@@ Line 498: / Line 499: @@
 } | nc $MAILSERVER 25
 </code>
+==== Отправка сообщения на все консоли ====
+<code>
+root@server:~# cat /usr/local/bin/mywall.sh
+</code><code>
+#!/bin/sh
+for MY_T in $(w | grep pts | awk '{print $2}')
+do
+        echo "$1" | jq > /dev/$MY_T
+done
+</code>
+==== Тестирование Web приложения на shell ====
+  * На примере [[Web интерфейс к почте#Roundcube]], автор [[https://www.perplexity.ai/]]
+<code>
+root@server:~# cat /usr/local/bin/roundcube_monitor.sh
+</code><code>
+#!/usr/bin/env bash
+set -euo pipefail
+ROUND_URL="${1:-http://server.corp13.un/mail/}"
+LOGIN="${2:-student}"
+PASSWORD="${3:-password}"
+TMP_DIR="$(mktemp -d)"
+COOKIE_JAR="$TMP_DIR/cookies.txt"
+LOGIN_PAGE="$TMP_DIR/login.html"
+RESPONSE_PAGE="$TMP_DIR/response.html"
+LOGOUT_PAGE="$TMP_DIR/logout.html"
+cleanup() {
+  rm -rf "$TMP_DIR"
+}
+trap cleanup EXIT
+extract_token() {
+  local file="$1"
+  grep -oP 'name="_token"\s+value="\K[^"]+' "$file" | head -n1 || true
+}
+echo "1) Открываю форму входа: $ROUND_URL"
+curl -ksSL \
+  -c "$COOKIE_JAR" \
+  -b "$COOKIE_JAR" \
+  "$ROUND_URL" \
+  -o "$LOGIN_PAGE"
+TOKEN="$(extract_token "$LOGIN_PAGE")"
+if [[ -z "$TOKEN" ]]; then
+  echo "CRITICAL: не найден _token на странице логина"
+  exit 2
+fi
+echo "2) Найден CSRF token"
+echo "3) Отправляю форму логина"
+curl -ksSL \
+  -c "$COOKIE_JAR" \
+  -b "$COOKIE_JAR" \
+  -e "$ROUND_URL" \
+  -A "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124 Safari/537.36" \
+  -H "Content-Type: application/x-www-form-urlencoded" \
+  --data-urlencode "_token=$TOKEN" \
+  --data-urlencode "_task=login" \
+  --data-urlencode "_action=login" \
+  --data-urlencode "_timezone=Europe/Moscow" \
+  --data-urlencode "_url=" \
+  --data-urlencode "_user=$LOGIN" \
+  --data-urlencode "_pass=$PASSWORD" \
+  "$ROUND_URL?_task=login" \
+  -o "$RESPONSE_PAGE"
+if grep -qiE 'Invalid request|Invalid security token|request token' "$RESPONSE_PAGE"; then
+  echo "CRITICAL: ошибка CSRF/token при логине"
+  exit 2
+fi
+if grep -qiE 'login failed|authentication failed|invalid password|failed to login' "$RESPONSE_PAGE"; then
+  echo "CRITICAL: логин не выполнен"
+  exit 2
+fi
+if grep -qi '_task=mail' "$RESPONSE_PAGE" || grep -qi 'logout' "$RESPONSE_PAGE"; then
+  echo "OK: вход в Roundcube выполнен"
+else
+  echo "WARNING: результат логина неоднозначен"
+  exit 1
+fi
+echo "4) Выполняю logout"
+POST_LOGIN_TOKEN="$(extract_token "$RESPONSE_PAGE")"
+if [[ -z "$POST_LOGIN_TOKEN" ]]; then
+  POST_LOGIN_TOKEN="$TOKEN"
+fi
+curl -ksSL \
+  -c "$COOKIE_JAR" \
+  -b "$COOKIE_JAR" \
+  -e "$ROUND_URL?_task=mail" \
+  "$ROUND_URL?_task=logout&_token=$POST_LOGIN_TOKEN" \
+  -o "$LOGOUT_PAGE"
+if grep -qiE 'request check failed|invalid security token' "$LOGOUT_PAGE"; then
+  echo "CRITICAL: logout не выполнен, ошибка token"
+  exit 2
+fi
+if grep -qiE 'login' "$LOGOUT_PAGE" || grep -qi 'logged out' "$LOGOUT_PAGE" || grep -qi '_task=login' "$LOGOUT_PAGE"; then
+  echo "OK: logout выполнен"
+  exit 0
+fi
+echo "WARNING: logout отправлен, но результат неоднозначен"
+exit 1
+</code>
 ==== Использование диалоговых окон ====
@@ Line 558: / Line 678: @@
 === Использование программы dialog (FreeBSD) ===
 <code>

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