fix(OMNY): use requests instead of shelling out to wget for tomo ID

TomoIDManager.register() called wget via subprocess with shell=True,
interpolating sample_name/eaccount/etc. unescaped into the command
string -- broke outright wherever wget isn't installed (as hit while
testing: "wget: command not found", silently falling back to tomo ID
0), and was a latent shell-injection risk. Use requests.get() with a
params dict instead: no external binary dependency, proper URL
encoding, and the same self-signed-cert/SSRF handling already used by
the samples PDF upload. Drops the now-unused OMNYToolsError class and
TMP_FILE/subprocess, which only existed to support the wget call.

csaxs_bec/bec_ipython_client/plugins/omny/omny_general_tools.py

@@ -4,7 +4,6 @@ import fcntl
 import json
 import os
 import socket
-import subprocess
 import sys
 import termios
 import threading
@@ -36,10 +35,6 @@ def umvr(*args):
     return scans.umv(*args, relative=True)
 
 
-class OMNYToolsError(Exception):
-    pass
-
-
 class OMNYTools:
 
     HEADER = "\033[95m"
@@ -354,7 +349,6 @@ class TomoIDManager:
 
     OMNY_URL = "https://v1p0zyg2w9n2k9c1.myfritz.net/samples/newmeasurement.php"
     TEST_OMNY_URL = "https://omny-test.psi.ch/samples/newmeasurement.php"
-    TMP_FILE = "~/currsamplesnr.txt"
     FALLBACK_TOMO_ID = 0
 
     @staticmethod
@@ -389,28 +383,39 @@ class TomoIDManager:
                 "production -- the eaccount recorded there won't be real."
             )
 
-        url = (
-            f"{omny_url}"
-            f"?sample={sample_name}"
-            f"&date={date}"
-            f"&eaccount={eaccount}"
-            f"&scannr={scan_number}"
-            f"&setup={setup}"
-            f"&additional={additional_info}"
-            f"&user={user}"
-        )
+        params = {
+            "sample": sample_name,
+            "date": date,
+            "eaccount": eaccount,
+            "scannr": scan_number,
+            "setup": setup,
+            "additional": additional_info,
+            "user": user,
+        }
 
-        tmp_file = os.path.expanduser(self.TMP_FILE)
         try:
-            result = subprocess.run(f"wget -q -O {tmp_file} '{url}'", shell=True, timeout=30)
-            if result.returncode != 0:
-                raise OMNYToolsError(
-                    f"wget failed (exit code {result.returncode}) fetching tomo ID from {omny_url}"
-                )
-            with open(tmp_file) as f:
-                content = f.read().strip()
-            return int(content)
-        except (subprocess.TimeoutExpired, FileNotFoundError, ValueError, OMNYToolsError) as exc:
+            import requests
+            import urllib3
+
+            urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+        except ImportError as exc:
+            logger.warning(
+                f"Could not obtain tomo ID from OMNY database ('requests' library not "
+                f"installed: {exc}); falling back to tomo ID {self.FALLBACK_TOMO_ID}."
+            )
+            return self.FALLBACK_TOMO_ID
+
+        try:
+            response = requests.get(
+                omny_url,
+                params=params,
+                timeout=30,
+                verify=False,  # accept self-signed certs
+                allow_redirects=False,  # SSRF hardening
+            )
+            response.raise_for_status()
+            return int(response.text.strip())
+        except (requests.RequestException, ValueError) as exc:
             logger.warning(
                 f"Could not obtain tomo ID from OMNY database ({exc}); "
                 f"falling back to tomo ID {self.FALLBACK_TOMO_ID}."