User-Agent has a default and is used for check_url

CHANGELOG.md

@@ -10,6 +10,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Scraper fails for all HTTP error codes returned when checking URL at startup (#223)
+- User-Agent now has a default value (#228)
+- Manipulation of spaces with UA suffix and adminEmail has been modified
+- Same User-Agent is used for check_url (Python) and Browsertrix crawler (#227)
 
 ## [1.5.3] - 2023-10-02
 

zimit.py

@@ -28,6 +28,7 @@ from tld import get_fld
 from warc2zim.main import warc2zim
 from zimscraperlib.uri import rebuild_uri
 
+DEFAULT_USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.15"
 
 class ProgressFileWatcher:
     def __init__(self, output_dir, stats_path):
@@ -226,7 +227,8 @@ def zimit(args=None):
 
     parser.add_argument(
         "--userAgent",
-        help="Override user-agent with specified",
+        help="Override default user-agent with specified value ; --userAgentSuffix is still applied",
+        default=DEFAULT_USER_AGENT
     )
 
     parser.add_argument(
@@ -344,8 +346,14 @@ def zimit(args=None):
 
     url = zimit_args.url
 
+    user_agent = zimit_args.userAgent
+    if zimit_args.userAgentSuffix:
+        user_agent += f" {zimit_args.userAgentSuffix}"
+    if zimit_args.adminEmail:
+        user_agent += f" {zimit_args.adminEmail}"
+
     if url:
-        url = check_url(url, zimit_args.scopeType)
+        url = check_url(url, user_agent, zimit_args.scopeType)
         warc2zim_args.append("--url")
         warc2zim_args.append(url)
 
@@ -394,12 +402,19 @@ def zimit(args=None):
         cmd_args.append("--url")
         cmd_args.append(url)
 
+    if zimit_args.mobileDevice:
+        if zimit_args.userAgent != DEFAULT_USER_AGENT:
+            print("WARNING: --mobileDevice and --userAgent are both set ; userAgent won't be used for browsertrix crawl; only userAgentSuffix and adminEmail will be passed")
+
         user_agent_suffix = zimit_args.userAgentSuffix
         if zimit_args.adminEmail:
-        user_agent_suffix += zimit_args.adminEmail
+            user_agent_suffix += f" {zimit_args.adminEmail}"
 
         cmd_args.append("--userAgentSuffix")
         cmd_args.append(user_agent_suffix)
+    else:
+        cmd_args.append("--userAgent")
+        cmd_args.append(user_agent)
 
     cmd_args.append("--cwd")
     cmd_args.append(str(temp_root_dir))
@@ -445,11 +460,11 @@ def zimit(args=None):
     return warc2zim(warc2zim_args)
 
 
-def check_url(url, scope=None):
+def check_url(url, user_agent, scope=None):
     url = urllib.parse.urlparse(url)
     try:
         resp = requests.head(
-            url.geturl(), stream=True, allow_redirects=True, timeout=(12.2, 27)
+            url.geturl(), stream=True, allow_redirects=True, timeout=(12.2, 27), headers={"User-Agent": user_agent}
         )
         resp.raise_for_status()
     except requests.exceptions.RequestException as exc:
@@ -505,7 +520,6 @@ def get_node_cmd_line(args):
         "allowHashUrls",
         "lang",
         "mobileDevice",
-        "userAgent",
         "useSitemap",
         "behaviors",
         "behaviorTimeout",